a-a aaa aam aas aax aay ama amm ams amx amy as- asa asm ass asx asy ax- axa axm axs axx ay- aya ays ayx maa mam mas max may mma mmm mms mmx msa msm mss msx msy mxa mxs my- mya mym mys myx saa sam sas sax say sma smm sms smx smy ss- ssa ssm sss ssx sxm sxs sy- sya sym sys syx xaa xam xas xma xmm xms xmx xsa xsm xss xxx xxy xyy yaa yam yas yax yay yma ymm yms ysa ysm yss ysy yxa yxy yys yyy