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 012345678910111213141516171819202122232425262728293031323334353637383940414243444546474849
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 012345678910111213141516171819202122232425262728293031323334353637383940414243444546474849
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size = 18, x1 = 18, y1 = 6, x2 = 26, y2 = 7