a-a a-c aaa aac aan aao aap aay ac- aca acc acn aco acp acy an- ana anc ann ano anp any aoa aoc aon aoo aop ap- apa apc apn apo app apy ay- aya ayc ayn ayo ayp c-- caa cac can cao cap cay cca ccc ccn cco ccp cn- cna cnc cnn cno cnp cny co- coa coc con coo cop coy cpa cpc cpn cpo cpp cya cyc cyn cyo cyp naa nac nan nao nap nay nca ncc ncn nco ncp nna nnc nnn nno nnp no- noa noc non noo nop noy npa npc npn npo npp nya nyc nyn nyo nyp nyy oaa oac oan oao oap oc- oca occ ocn oco ocp on- ona onc onn ono onp ony oo- ooa ooc oon ooo oop op- opa opc opn opo opp opy oya oyo p-p paa pac pan pao pap pay pca pcc pcn pco pcp pn- pna pnc pnn pno pnp pny poa poc pon poo pop poy ppa ppc ppn ppo ppp py- pya pyc pyn pyo yaa yac yan yao yap yay yca ycc yco ycp ycy yna ynn ynp yny yoc yon yoo yop yoy ypa ypo yyc yyy