X121XX11X21X111M
X1212XX1XX12121M
X12X21X21XX2121M
1X21X1121112111M
1X212111111X121M
1121X1112112121M
11212112211X111M
1X2121112112111M
2121X112111X121M
2X21X1111112121M
2X212112111X111M
2121X1122112111M
21212111211X121M
2X21X111211X111M
1X21X112211X121M
2X2121122112121M
