a-a aaa aam aap aax aay ama amm amp amx amy ap- apa apm app apx apy ax- axa axm axp axx ay- aya ayp ayx maa mam map max may mma mmm mmp mmx mpa mpm mpp mpx mxa mxp my- mya mym myx p-p paa pam pap pax pay pma pmm pmp pmx ppa ppm ppp ppx pxm py- pya pym pyx xaa xam xap xma xmm xmp xmx xpa xpm xpp xxp xxx xxy xyp xyy yaa yam yap yax yay yma ymm ypa yxa yxy yyy