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2X112X121X211211
1X2121XXXX211221
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1X11212X2X211210
1XX12X1X12211221
X2X121X212211211
21112XXXX2211220
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11X12X22X12X1210
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2X112112X121X221
12X12X1X2121X210
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11X122X21X21X211
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2X212XX11221X220
11X1212XX221X210
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2XX121XX21212210
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XX11211XX2212221
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