{"id":15938,"date":"2026-03-15T13:49:56","date_gmt":"2026-03-15T11:49:56","guid":{"rendered":"https:\/\/aristotelio.edu.gr\/new\/?p=15938"},"modified":"2026-03-15T13:49:56","modified_gmt":"2026-03-15T11:49:56","slug":"%cf%84%ce%bf-1%ce%bf-%ce%b2%cf%81%ce%b1%ce%b2%ce%b5%ce%af%ce%bf-%ce%ba%ce%b1%ce%b9%ce%bd%ce%bf%cf%84%ce%bf%ce%bc%ce%af%ce%b1-%cf%80%cf%81%ce%bf%cf%8a%cf%8c%ce%bd%cf%84%ce%bf%cf%82-%cf%85%cf%80","status":"publish","type":"post","link":"https:\/\/aristotelio.edu.gr\/new\/%cf%84%ce%bf-1%ce%bf-%ce%b2%cf%81%ce%b1%ce%b2%ce%b5%ce%af%ce%bf-%ce%ba%ce%b1%ce%b9%ce%bd%ce%bf%cf%84%ce%bf%ce%bc%ce%af%ce%b1-%cf%80%cf%81%ce%bf%cf%8a%cf%8c%ce%bd%cf%84%ce%bf%cf%82-%cf%85%cf%80\/","title":{"rendered":"\u03a4\u03bf 1\u03bf \u0392\u03c1\u03b1\u03b2\u03b5\u03af\u03bf \u00ab\u039a\u03b1\u03b9\u03bd\u03bf\u03c4\u03bf\u03bc\u03af\u03b1 \u03a0\u03c1\u03bf\u03ca\u03cc\u03bd\u03c4\u03bf\u03c2\/\u03a5\u03c0\u03b7\u03c1\u03b5\u03c3\u03af\u03b1\u03c2\u00bb"},"content":{"rendered":"<div class=\"x14z9mp xat24cr x1lziwak x1vvkbs xtlvy1s x126k92a\">\n<div dir=\"auto\">\u03a0\u03b5\u03bd\u03ae\u03bd\u03c4\u03b1 \u03c3\u03c7\u03bf\u03bb\u03b5\u03af\u03b1 \u03ba\u03b1\u03b9 \u03b5\u03ba\u03b1\u03c4\u03bf\u03bd\u03c4\u03ac\u03b4\u03b5\u03c2 \u03bc\u03b1\u03b8\u03b7\u03c4\u03ad\u03c2 \u03b1\u03c0\u03cc \u03cc\u03bb\u03b7 \u03c4\u03b7 \u0392\u03cc\u03c1\u03b5\u03b9\u03b1 \u0395\u03bb\u03bb\u03ac\u03b4\u03b1 \u03c3\u03c5\u03bc\u03bc\u03b5\u03c4\u03b5\u03af\u03c7\u03b1\u03bd \u03bc\u03b5 \u03bc\u03b5\u03b3\u03ac\u03bb\u03b7 \u03b5\u03c0\u03b9\u03c4\u03c5\u03c7\u03af\u03b1 \u03c3\u03c4\u03b7\u03bd \u03ad\u03ba\u03b8\u03b5\u03c3\u03b7 \u03bd\u03b5\u03b1\u03bd\u03b9\u03ba\u03ae\u03c2 \u03b5\u03c0\u03b9\u03c7\u03b5\u03b9\u03c1\u03b7\u03bc\u03b1\u03c4\u03b9\u03ba\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2 2026 \u03c4\u03bf\u03c5 Junior Achievement Greece, \u03b7 \u03bf\u03c0\u03bf\u03af\u03b1 \u03c4\u03b5\u03bb\u03b5\u03af \u03c5\u03c0\u03cc \u03c4\u03b7\u03bd \u03b1\u03b9\u03b3\u03af\u03b4\u03b1 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03bd \u03c5\u03c0\u03bf\u03c3\u03c4\u03ae\u03c1\u03b9\u03be\u03b7 \u03c4\u03bf\u03c5 \u03a5\u03c0\u03bf\u03c5\u03c1\u03b3\u03b5\u03af\u03bf\u03c5 \u03a0\u03b1\u03b9\u03b4\u03b5\u03af\u03b1\u03c2 \u03b3\u03b9\u03b1 20\u03b7 \u03c3\u03c5\u03bd\u03b5\u03c7\u03cc\u03bc\u03b5\u03bd\u03b7 \u03c7\u03c1\u03bf\u03bd\u03b9\u03ac. \u0397 \u03ad\u03ba\u03b8\u03b5\u03c3\u03b7 \u03ad\u03bb\u03b1\u03b2\u03b5 \u03c7\u03ce\u03c1\u03b1 \u03c3\u03c4\u03bf \u03b5\u03bc\u03c0\u03bf\u03c1\u03b9\u03ba\u03cc \u03ba\u03ad\u03bd\u03c4\u03c1\u03bf \u00abMediterranean Cosmos\u00bb,\u03cc\u03c0\u03bf\u03c5 \u03bf\u03b9 \u03bc\u03b1\u03b8\u03b7\u03c4\u03ad\u03c2 \u03c0\u03b1\u03c1\u03bf\u03c5\u03c3\u03af\u03b1\u03c3\u03b1\u03bd \u03c0\u03c1\u03c9\u03c4\u03cc\u03c4\u03c5\u03c0\u03b5\u03c2 \u03b5\u03c0\u03b9\u03c7\u03b5\u03b9\u03c1\u03b7\u03bc\u03b1\u03c4\u03b9\u03ba\u03ad\u03c2 \u03b9\u03b4\u03ad\u03b5\u03c2 \u03ba\u03b1\u03b9 \u03ba\u03b1\u03b9\u03bd\u03bf\u03c4\u03cc\u03bc\u03b1 \u03c0\u03c1\u03bf\u03ca\u03cc\u03bd\u03c4\u03b1.<\/div>\n<\/div>\n<div class=\"x14z9mp xat24cr x1lziwak x1vvkbs xtlvy1s x126k92a\">\n<div dir=\"auto\"><\/div>\n<div dir=\"auto\">\u03a4\u03bf 1\u03bf \u03b2\u03c1\u03b1\u03b2\u03b5\u03af\u03bf \u00ab\u039a\u03b1\u03b9\u03bd\u03bf\u03c4\u03bf\u03bc\u03af\u03b1 \u03a0\u03c1\u03bf\u03ca\u03cc\u03bd\u03c4\u03bf\u03c2\/\u03a5\u03c0\u03b7\u03c1\u03b5\u03c3\u03af\u03b1\u03c2\u00bb \u03ba\u03b1\u03c4\u03ad\u03ba\u03c4\u03b7\u03c3\u03b5 \u03c4\u03bf \u0391\u03c1\u03b9\u03c3\u03c4\u03bf\u03c4\u03ad\u03bb\u03b5\u03b9\u03bf \u039a\u03bf\u03bb\u03bb\u03ad\u03b3\u03b9\u03bf \u0398\u03b5\u03c3\u03c3\u03b1\u03bb\u03bf\u03bd\u03af\u03ba\u03b7\u03c2 \u03bc\u03b5 \u03c4\u03b7\u03bd \u03bc\u03b1\u03b8\u03b7\u03c4\u03b9\u03ba\u03ae \u03b5\u03b9\u03ba\u03bf\u03bd\u03b9\u03ba\u03ae \u03b5\u03c0\u03b9\u03c7\u03b5\u03af\u03c1\u03b7\u03c3\u03b7 \u03c4\u03b7\u03c2 Arti\u039f2, \u03c0\u03c1\u03bf\u03c3\u03c6\u03ad\u03c1\u03b5\u03b9 \u03ba\u03b1\u03b9\u03bd\u03bf\u03c4\u03cc\u03bc\u03b5\u03c2 \u03bb\u03cd\u03c3\u03b5\u03b9\u03c2 \u03b3\u03b9\u03b1 \u03b5\u03c3\u03c9\u03c4\u03b5\u03c1\u03b9\u03ba\u03bf\u03cd\u03c2 \u03ba\u03b1\u03b9 \u03b5\u03be\u03c9\u03c4\u03b5\u03c1\u03b9\u03ba\u03bf\u03cd\u03c2 \u03c7\u03ce\u03c1\u03bf\u03c5\u03c2, \u03c3\u03c5\u03bd\u03b4\u03c5\u03ac\u03b6\u03bf\u03bd\u03c4\u03b1\u03c2 \u03c3\u03cd\u03b3\u03c7\u03c1\u03bf\u03bd\u03bf design \u03bc\u03b5 \u03c5\u03c8\u03b7\u03bb\u03ae \u03b5\u03c1\u03b3\u03bf\u03bd\u03bf\u03bc\u03af\u03b1, \u03b4\u03b7\u03bc\u03b9\u03bf\u03c5\u03c1\u03b3\u03ce\u03bd\u03c4\u03b1\u03c2 \u03b1\u03c3\u03c6\u03b1\u03bb\u03ae, \u03c5\u03b3\u03b9\u03ae \u03ba\u03b1\u03b9 \u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03b9\u03ba\u03ac \u03c0\u03b5\u03c1\u03b9\u03b2\u03ac\u03bb\u03bb\u03bf\u03bd\u03c4\u03b1 \u03b3\u03b9\u03b1 \u03cc\u03bb\u03bf\u03c5\u03c2 \u03c4\u03bf\u03c5\u03c2 \u03c7\u03c1\u03ae\u03c3\u03c4\u03b5\u03c2.<\/div>\n<\/div>\n<div class=\"x14z9mp xat24cr x1lziwak x1vvkbs xtlvy1s x126k92a\">\n<div dir=\"auto\"><\/div>\n<div dir=\"auto\">\u0395\u03b9\u03b4\u03b9\u03ba\u03cc\u03c4\u03b5\u03c1\u03b1, \u03b7 Artio2 \u03b4\u03c1\u03b1\u03c3\u03c4\u03b7\u03c1\u03b9\u03bf\u03c0\u03bf\u03b9\u03b5\u03af\u03c4\u03b1\u03b9 \u03c3\u03c4\u03bf \u03c3\u03c7\u03b5\u03b4\u03b9\u03b1\u03c3\u03bc\u03cc, \u03c4\u03b7\u03bd \u03b1\u03bd\u03ac\u03c0\u03c4\u03c5\u03be\u03b7 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03bd \u03c0\u03b1\u03c1\u03b1\u03b3\u03c9\u03b3\u03ae \u03ad\u03be\u03c5\u03c0\u03bd\u03c9\u03bd \u03c7\u03b5\u03b9\u03c1\u03bf\u03bb\u03b1\u03b2\u03ce\u03bd, \u03c0\u03bf\u03bc\u03bf\u03bb\u03ce\u03bd \u03ba\u03b1\u03b9 \u03b3\u03b5\u03bd\u03b9\u03ba\u03ac \u03b5\u03c0\u03b9\u03c6\u03b1\u03bd\u03b5\u03b9\u03ce\u03bd, \u03b1\u03be\u03b9\u03bf\u03c0\u03bf\u03b9\u03ce\u03bd\u03c4\u03b1\u03c2 \u03c0\u03c1\u03bf\u03b7\u03b3\u03bc\u03ad\u03bd\u03b1 \u03c6\u03c9\u03c4\u03bf\u03ba\u03b1\u03c4\u03b1\u03bb\u03c5\u03c4\u03b9\u03ba\u03ac \u03ba\u03b1\u03b9 \u03b2\u03b9\u03bf\u03b4\u03c1\u03b1\u03c3\u03c4\u03b9\u03ba\u03ac \u03c5\u03bb\u03b9\u03ba\u03ac, \u03cc\u03c0\u03c9\u03c2 \u03c4\u03bf \u03b4\u03b9\u03bf\u03be\u03b5\u03af\u03b4\u03b9\u03bf \u03c4\u03bf\u03c5 \u03c4\u03b9\u03c4\u03b1\u03bd\u03af\u03bf\u03c5 (TiO\u2082), \u03b2\u03b9\u03bf\u03b5\u03bd\u03b5\u03c1\u03b3\u03ac \u03c0\u03bf\u03bb\u03c5\u03bc\u03b5\u03c1\u03ae \u03ba\u03b1\u03b9 \u03bd\u03b1\u03bd\u03bf\u03c3\u03cd\u03bd\u03b8\u03b5\u03c4\u03b1 \u03c3\u03c5\u03c3\u03c4\u03ae\u03bc\u03b1\u03c4\u03b1. \u0397 \u03b5\u03be\u03b5\u03b9\u03b4\u03af\u03ba\u03b5\u03c5\u03c3\u03ae \u03bc\u03b1\u03c2 \u03c3\u03c4\u03b7\u03bd \u03b1\u03bd\u03ac\u03c0\u03c4\u03c5\u03be\u03b7 \u03c0\u03bf\u03bb\u03c5\u03bb\u03b5\u03b9\u03c4\u03bf\u03c5\u03c1\u03b3\u03b9\u03ba\u03ce\u03bd \u03b5\u03c0\u03b9\u03c6\u03b1\u03bd\u03b5\u03b9\u03ce\u03bd \u03b5\u03c0\u03b9\u03c3\u03c4\u03c1\u03c9\u03bc\u03ad\u03bd\u03c9\u03bd \u03bc\u03b5 TiO\u2082 \u03ad\u03c7\u03b5\u03b9 \u03bf\u03b4\u03b7\u03b3\u03ae\u03c3\u03b5\u03b9 \u03c4\u03b1 \u03c4\u03b5\u03bb\u03b5\u03c5\u03c4\u03b1\u03af\u03b1 \u03c7\u03c1\u03cc\u03bd\u03b9\u03b1 \u03c3\u03c4\u03b7 \u03b4\u03b7\u03bc\u03b9\u03bf\u03c5\u03c1\u03b3\u03af\u03b1 \u03bc\u03b9\u03b1\u03c2 \u03bd\u03ad\u03b1\u03c2, \u03c0\u03c1\u03c9\u03c4\u03cc\u03c4\u03c5\u03c0\u03b7\u03c2 \u03c3\u03b5\u03b9\u03c1\u03ac\u03c2 \u03c0\u03c1\u03bf\u03ca\u03cc\u03bd\u03c4\u03c9\u03bd, \u03c4\u03b1 \u03bf\u03c0\u03bf\u03af\u03b1, \u03bc\u03b5 \u03c4\u03b7 \u03b2\u03bf\u03ae\u03b8\u03b5\u03b9\u03b1 \u03c4\u03bf\u03c5 \u03c6\u03c9\u03c4\u03cc\u03c2, \u03bc\u03b5\u03c4\u03b1\u03c4\u03c1\u03ad\u03c0\u03bf\u03c5\u03bd \u03ba\u03ac\u03b8\u03b5 \u03b5\u03c0\u03b9\u03c6\u03ac\u03bd\u03b5\u03b9\u03b1 \u03c3\u03b5 \u03b1\u03c5\u03c4\u03bf\u03ba\u03b1\u03b8\u03b1\u03c1\u03b9\u03b6\u03cc\u03bc\u03b5\u03bd\u03b7 \u03ba\u03b1\u03b9 \u03bc\u03b5 \u03b9\u03c3\u03c7\u03c5\u03c1\u03ad\u03c2 \u03b1\u03bd\u03c4\u03b9\u03bc\u03b9\u03ba\u03c1\u03bf\u03b2\u03b9\u03b1\u03ba\u03ad\u03c2 \u03b9\u03b4\u03b9\u03cc\u03c4\u03b7\u03c4\u03b5\u03c2, \u03c3\u03c5\u03bc\u03b2\u03ac\u03bb\u03bb\u03bf\u03bd\u03c4\u03b1\u03c2 \u03bf\u03c5\u03c3\u03b9\u03b1\u03c3\u03c4\u03b9\u03ba\u03ac \u03c3\u03c4\u03b7 \u03b2\u03b5\u03bb\u03c4\u03af\u03c9\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03c5\u03b3\u03b9\u03b5\u03b9\u03bd\u03ae\u03c2 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03c2 \u03b1\u03c3\u03c6\u03ac\u03bb\u03b5\u03b9\u03b1\u03c2 \u03c3\u03b5 \u03c7\u03ce\u03c1\u03bf\u03c5\u03c2 \u03c5\u03b3\u03b9\u03b5\u03b9\u03bd\u03ae\u03c2, \u03cc\u03c0\u03c9\u03c2 \u03c0\u03ac\u03b3\u03ba\u03bf\u03b9 \u03c7\u03b5\u03b9\u03c1\u03bf\u03c5\u03c1\u03b3\u03b9\u03ba\u03ce\u03bd \u03bc\u03bf\u03bd\u03ac\u03b4\u03c9\u03bd \u03ba\u03b1\u03b9 \u03c3\u03c5\u03c3\u03ba\u03b5\u03c5\u03b1\u03c3\u03af\u03b1\u03c2 \u03c4\u03c1\u03bf\u03c6\u03af\u03bc\u03c9\u03bd.<\/div>\n<\/div>\n<div class=\"x14z9mp xat24cr x1lziwak x1vvkbs xtlvy1s x126k92a\">\n<div dir=\"auto\"><\/div>\n<div dir=\"auto\">\u039f\u03b9 \u03b4\u03b9\u03bf\u03c1\u03b3\u03b1\u03bd\u03c9\u03c4\u03ad\u03c2 \u03c3\u03c5\u03bd\u03b5\u03c7\u03ac\u03c1\u03b7\u03c3\u03b1\u03bd \u03c4\u03bf\u03c5\u03c2 \u03bc\u03b1\u03b8\u03b7\u03c4\u03ad\u03c2 \u03ba\u03b1\u03b9 \u03c4\u03bf\u03c5\u03c2 \u03b5\u03ba\u03c0\u03b1\u03b9\u03b4\u03b5\u03c5\u03c4\u03b9\u03ba\u03bf\u03cd\u03c2 \u03b3\u03b9\u03b1 \u03c4\u03b7 \u03b4\u03b7\u03bc\u03b9\u03bf\u03c5\u03c1\u03b3\u03b9\u03ba\u03cc\u03c4\u03b7\u03c4\u03b1, \u03c4\u03b7\u03bd \u03b1\u03c6\u03bf\u03c3\u03af\u03c9\u03c3\u03b7 \u03ba\u03b1\u03b9 \u03c4\u03bf \u03c5\u03c8\u03b7\u03bb\u03cc \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03bf \u03c4\u03c9\u03bd \u03c0\u03b1\u03c1\u03bf\u03c5\u03c3\u03b9\u03ac\u03c3\u03b5\u03c9\u03bd, \u03b5\u03c0\u03b9\u03c3\u03b7\u03bc\u03b1\u03af\u03bd\u03bf\u03bd\u03c4\u03b1\u03c2 \u03c4\u03b7 \u03c3\u03b7\u03bc\u03b1\u03c3\u03af\u03b1 \u03c4\u03b7\u03c2 \u03b5\u03bd\u03af\u03c3\u03c7\u03c5\u03c3\u03b7\u03c2 \u03c4\u03b7\u03c2 \u03ba\u03b1\u03b9\u03bd\u03bf\u03c4\u03bf\u03bc\u03af\u03b1\u03c2 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03c2 \u03b5\u03c0\u03b9\u03c7\u03b5\u03b9\u03c1\u03b7\u03bc\u03b1\u03c4\u03b9\u03ba\u03ae\u03c2 \u03c3\u03ba\u03ad\u03c8\u03b7\u03c2 \u03c3\u03c4\u03b7 \u03bd\u03ad\u03b1 \u03b3\u03b5\u03bd\u03b9\u03ac.<\/div>\n<\/div>\n<div dir=\"auto\"><\/div>\n<div dir=\"auto\">\n<figure id=\"attachment_15939\" aria-describedby=\"caption-attachment-15939\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-medium wp-image-15939\" title=\"648297143 1526119716186512 7828105204569232765 n\" src=\"https:\/\/aristotelio.edu.gr\/new\/wp-content\/uploads\/2026\/03\/648297143_1526119716186512_7828105204569232765_n-300x225.jpg\" alt=\"648297143 1526119716186512 7828105204569232765 n\" width=\"300\" height=\"225\" srcset=\"https:\/\/aristotelio.edu.gr\/new\/wp-content\/uploads\/2026\/03\/648297143_1526119716186512_7828105204569232765_n-300x225.jpg 300w, https:\/\/aristotelio.edu.gr\/new\/wp-content\/uploads\/2026\/03\/648297143_1526119716186512_7828105204569232765_n-768x576.jpg 768w, https:\/\/aristotelio.edu.gr\/new\/wp-content\/uploads\/2026\/03\/648297143_1526119716186512_7828105204569232765_n-600x450.jpg 600w, https:\/\/aristotelio.edu.gr\/new\/wp-content\/uploads\/2026\/03\/648297143_1526119716186512_7828105204569232765_n.jpg 810w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-15939\" class=\"wp-caption-text\">648297143 1526119716186512 7828105204569232765 n<\/figcaption><\/figure>\n<figure id=\"attachment_15940\" aria-describedby=\"caption-attachment-15940\" style=\"width: 300px\" class=\"wp-caption alignnone\"><img decoding=\"async\" class=\"size-medium wp-image-15940\" title=\"649279000 1526119712853179 3443083975738144190 n\" src=\"https:\/\/aristotelio.edu.gr\/new\/wp-content\/uploads\/2026\/03\/649279000_1526119712853179_3443083975738144190_n-300x225.jpg\" alt=\"649279000 1526119712853179 3443083975738144190 n\" width=\"300\" height=\"225\" srcset=\"https:\/\/aristotelio.edu.gr\/new\/wp-content\/uploads\/2026\/03\/649279000_1526119712853179_3443083975738144190_n-300x225.jpg 300w, https:\/\/aristotelio.edu.gr\/new\/wp-content\/uploads\/2026\/03\/649279000_1526119712853179_3443083975738144190_n-768x576.jpg 768w, https:\/\/aristotelio.edu.gr\/new\/wp-content\/uploads\/2026\/03\/649279000_1526119712853179_3443083975738144190_n-600x450.jpg 600w, https:\/\/aristotelio.edu.gr\/new\/wp-content\/uploads\/2026\/03\/649279000_1526119712853179_3443083975738144190_n.jpg 960w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><figcaption id=\"caption-attachment-15940\" class=\"wp-caption-text\">649279000 1526119712853179 3443083975738144190 n<\/figcaption><\/figure>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u03a0\u03b5\u03bd\u03ae\u03bd\u03c4\u03b1 \u03c3\u03c7\u03bf\u03bb\u03b5\u03af\u03b1 \u03ba\u03b1\u03b9 \u03b5\u03ba\u03b1\u03c4\u03bf\u03bd\u03c4\u03ac\u03b4\u03b5\u03c2 \u03bc\u03b1\u03b8\u03b7\u03c4\u03ad\u03c2 \u03b1\u03c0\u03cc \u03cc\u03bb\u03b7 \u03c4\u03b7 \u0392\u03cc\u03c1\u03b5\u03b9\u03b1 \u0395\u03bb\u03bb\u03ac\u03b4\u03b1 \u03c3\u03c5\u03bc\u03bc\u03b5\u03c4\u03b5\u03af\u03c7\u03b1\u03bd \u03bc\u03b5 \u03bc\u03b5\u03b3\u03ac\u03bb\u03b7 \u03b5\u03c0\u03b9\u03c4\u03c5\u03c7\u03af\u03b1 \u03c3\u03c4\u03b7\u03bd \u03ad\u03ba\u03b8\u03b5\u03c3\u03b7 \u03bd\u03b5\u03b1\u03bd\u03b9\u03ba\u03ae\u03c2 \u03b5\u03c0\u03b9\u03c7\u03b5\u03b9\u03c1\u03b7\u03bc\u03b1\u03c4\u03b9\u03ba\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2 2026 \u03c4\u03bf\u03c5 Junior Achievement Greece, \u03b7 \u03bf\u03c0\u03bf\u03af\u03b1 \u03c4\u03b5\u03bb\u03b5\u03af \u03c5\u03c0\u03cc \u03c4\u03b7\u03bd 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