2111121211111XMM
211112121111X1MM
211112121X1111MM
21111212121122MM
21XXX212X11111MM
21XXX212XX11X2MM
21XXX212XX112XMM
21XXX212X211XXMM
21222212211122MM
212222122X11XXMM
21222212221112MM
21222212221121MM
