a-a aaa aam aao aas aax aay ama amm amo ams amx amy aoa aom aoo aos aox as- asa asm aso ass asx asy ax- axa axm axo axs axx ay- aya ayo ays ayx m-o maa mam mao mas max may mma mmm mmo mms mmx moa mom moo mos mox moy msa msm mso mss msx msy mxa mxs my- mya mym myo mys myx oaa oam oao oas oax om- oma omm omo oms omx omy oo- ooa oom ooo oos oox os- osa osm oso oss osx ox- oxa oxo oxx oxy oya oyo oys saa sam sao sas sax say sma smm smo sms smx smy soa som soo sos sox soy ss- ssa ssm sso sss ssx sxm sxs sy- sya sym sys syx xaa xam xas xma xmm xmo xms xmx xoa xom xoo xos xox xsa xsm xss xxo xxx xxy xyy yaa yam yao yas yax yay yma ymm ymo yms yom yoo yos yox yoy ysa ysm yso yss ysy yxa yxy yys yyy