c-- ccc ccm cco cct ccu cmc cmm cmo cmt cmu cmy co- coc com coo cot cou coy ctc ctm cto ctt ctu cty cuc cum cuo cut cuu cuy cyc cym cyo cyt m-o mc- mcc mcm mco mct mcu mmc mmm mmo mmt mmu moc mom moo mot mou moy mtc mtm mto mtt mtu muc mum mut muu muy my- myc mym myo myt myu oc- occ ocm oco oct ocu om- omc omm omo omt omu omy oo- ooc oom ooo oot ot- otc otm oto ott otu ou- ouc oum ouo out oyo tcc tcm tco tct tcu tmc tmm tmo tmt tmu tmy to- toc tom too tot tou toy ttc ttm tto ttt ttu tty tuc tum tuo tut tuu tuy tyc tym tyo tyt ucc ucm uco uct ucu um- umc umm umo umt umu uoc uom uoo uot utc utm uto utt utu uty uuc uum uut uuu uyc uyo uyu ycc yco ycu ycy ymc ymm ymo ymt yoc yom yoo yot you yoy ytc ytm yto ytt ytu yum yuo yut yuu yuy yyc yyt yyu yyy