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11XX21X1X211X121
11XX21X12X111121
112121X1X2111121
112121X12X11X121
112X2111XX11X121
112X211122111121
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X1X121X122111121
X1XX2111X2111121
X1XX21112X11X121
X1212111X211X121
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X12X21X1XX111121
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