a-a a-c aaa aac aam aao aap aay ac- aca acc acm aco acp acy ama amc amm amo amp amy aoa aoc aom aoo aop ap- apa apc apm apo app apy ay- aya ayc ayo ayp c-- caa cac cam cao cap cay cca ccc ccm cco ccp cma cmc cmm cmo cmp cmy co- coa coc com coo cop coy cpa cpc cpm cpo cpp cya cyc cym cyo cyp m-o maa mac mam mao map may mc- mca mcc mcm mco mcp mma mmc mmm mmo mmp moa moc mom moo mop moy mpa mpc mpm mpo mpp my- mya myc mym myo oaa oac oam oao oap oc- oca occ ocm oco ocp om- oma omc omm omo omp omy oo- ooa ooc oom ooo oop op- opa opc opm opo opp opy oya oyo p-p paa pac pam pao pap pay pca pcc pcm pco pcp pma pmc pmm pmo pmp poa poc pom poo pop poy ppa ppc ppm ppo ppp py- pya pyc pym pyo yaa yac yam yao yap yay yca ycc yco ycp ycy yma ymc ymm ymo yoc yom yoo yop yoy ypa ypo yyc yyy