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X1XX22X2X12X1121
X1X2X12221221121
XX1X212221221121
XX12X2X2X12X1121
XXXXX1X2X12X1121
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211XX1X2X12X1121
2112222221221121
21XX212221221121
21X2X2X2X12X1121
2X1X22X2X12X1121
2X12X12221221121
2XXXX22221221121
2XX221X2X12X1121
