1XX1111XXX211X20
1X2X111121211220
12XX1111X1211X20
1221111X2X211220
1XX111XX21211X20
1X2X11X1XX211220
12X111X1X1211220
122X11XX2X211X20
1XX111212X211X20
1X2X112XX1211220
12XX112X2X211220
12211121X1211X20
