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1X21112121212111
1X21X1X121221111
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X121X1X121221111
X121X12121211111
XX2111X121211111
XX21112121221111
XX21X1X121212111
XX21X12121222111
212111X121211111
2121X12121222111
2X2111X121222111
2X21X12121211111
1121112112212111
1121X11121212111
1221111112212X11
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X121X12121212X11
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