11X11X12X1111X20
11X11X12X11X1X20
11211112X1111X20
11211112X11X1X20
1121XX12XX111X20
1121XX12XX1X1X20
11X1X112X2111X20
11X1X112X21X1X20
11X12112XX111X20
11X12112XX1X1X20
11212X12X2111X20
11212X12X21X1X20
