111XX11X1111XX21
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1X1XX1121112XX21
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1X1X211XX111XX21
1X1XX1121112X221
11XX211X1112X221
11XXX112X111X221
1X1X211XX111X221
111X2112X112XX21
1XXXX11XX112XX21
1XXX21121111XX21
111X2112X112X221
1XXXX11XX112X221
1XXX21121111X221
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2XXXX11X1111XX21
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21XXX1121112XX21
2X1X211X1112XX21
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21XXX1121112X221
2X1X211X1112X221
2X1XX112X111X221
21XX211XX111X221
2XXX2112X112XX21
2XXX2112X112X221
