-ey a-a a-c aaa aac aae aao aap aas aay ac- aca acc ace aco acp acs acy aea aec aee aeo aep aes aey aoa aoc aoe aoo aop aos ap- apa apc ape apo app aps apy as- asa asc ase aso asp ass asy ay- aya ayc aye ayo ayp ays c-- caa cac cae cao cap cas cay cca ccc cce cco ccp ccs ce- cea cec cee ceo cep ces cey co- coa coc coe coo cop cos coy cpa cpc cpe cpo cpp cps csa csc cse cso csp css csy cya cyc cye cyo cyp cys eaa eac eae eao eap eas ec- eca ecc ece eco ecs eea eec eee eeo eep ees eey eo- eoa eoc eoe eoo eop eos ep- epa epc epe epo epp eps es- esa esc ese eso esp ess esy eya eyc eye eyo eyp eys oaa oac oae oao oap oas oc- oca occ oco ocp ocs oea oec oee oeo oep oes oey oo- ooa ooc ooo oop oos op- opa opc ope opo opp ops opy os- osa osc ose oso osp oss oya oye oyo oys p-p paa pac pae pao pap pas pay pca pcc pce pco pcp pcs pea pec pee peo pep pes pey poa poc poe poo pop pos poy ppa ppc ppe ppo ppp pps ps- psa psc pse pso psp pss psy py- pya pyc pye pyo pys saa sac sae sao sap sas say sca scc sce sco scp scs se- sea sec see seo sep ses sey soa soc soe soo sop sos soy spa spc spe spo spp sps spy ss- ssa ssc sse sso ssp sss sy- sya syc sye syp sys yaa yac yae yao yap yas yay yca ycc yce yco ycp ycs ycy yea yec yee yeo yep yes yey yoc yoe yoo yop yos yoy ypa ypo yps ysa ysc yse yso ysp yss ysy yyc yye yys yyy