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121XX1X1X1211120
121X2111XX2X1X20
1212X111XX2X1X21
1212211111211121
121221X1XX2X1X21
X21XX111112111M0
X21XX1X1XX2X1XM0
X21X21X1112111M0
X212X1X1112111M1
X21221111X2X1XM1
X2122111X12111M1
