a-a a-c a-t aaa aac aam aao aat aax aay ac- aca acc acm aco act acx acy ama amc amm amo amt amx amy aoa aoc aom aoo aot aox at- ata atc atm ato att atx ax- axa axm axo axt axx ay- aya ayc ayo ayt ayx c-- caa cac cam cao cat cax cay cca ccc ccm cco cct ccx cma cmc cmm cmo cmt cmx cmy co- coa coc com coo cot cox coy cta ctc ctm cto ctt ctx cty cxc cxo cxt cxx cya cyc cym cyo cyt m-o maa mac mam mao mat max may mc- mca mcc mcm mco mct mcx mma mmc mmm mmo mmt mmx moa moc mom moo mot mox moy mta mtc mtm mto mtt mtx mxa mxc my- mya myc mym myo myt myx oaa oac oam oao oat oax oc- oca occ ocm oco oct ocx om- oma omc omm omo omt omx omy oo- ooa ooc oom ooo oot oox ot- ota otc otm oto ott ox- oxa oxc oxo oxt oxx oxy oya oyo t-x taa tac tam tao tat tax tay tca tcc tcm tco tct tcx tma tmc tmm tmo tmt tmx tmy to- toa toc tom too tot tox toy tta ttc ttm tto ttt ttx tty txt tya tyc tym tyo tyt xaa xac xam xat xcx xma xmc xmm xmo xmt xmx xoa xoc xom xoo xot xox xtc xtm xtx xty xxo xxx xxy xyy yaa yac yam yao yat yax yay yca ycc yco ycy yma ymc ymm ymo ymt yoc yom yoo yot yox yoy yta ytc ytm yto ytt yxa yxy yyc yyt yyy