a-a aaa aam aap aas aax ama amm amp ams amx ap- apa apm app aps apx as- asa asm asp ass asx ax- axa axm axp axs axx maa mam map mas max mma mmm mmp mms mmx mpa mpm mpp mps mpx msa msm msp mss msx mxa mxp mxs p-p paa pam pap pas pax pma pmm pmp pms pmx ppa ppm ppp pps ppx ps- psa psm psp pss psx pxm pxs saa sam sap sas sax sma smm smp sms smx spa spm spp sps spx ss- ssa ssm ssp sss ssx sxm sxs xaa xam xap xas xma xmm xmp xms xmx xpa xpm xpp xps xsa xsm xsp xss xxp xxx