1X2X21112XX112M2
12222121XXX11221
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1X2X211XXX1XX2M2
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1X2221XX2211XX22
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11212X11X2X1X2M2
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122221X12X21X222
1X2X21X12221XX22
11222111XXX12222
1X2X21X12XX12X21
1X2X212X12X121M2
