-ey c-- ccc cce cck cco ccp ccs ce- cec cee cek ceo cep ces cey ckc cko cks cky co- coc coe cok coo cop cos coy cpc cpe cpk cpo cpp cps csc cse csk cso csp css csy cyc cye cyk cyo cyp cys ec- ecc ece eck eco ecs eec eee eek eeo eep ees eey ekc eke eko ekp eks eky eo- eoc eoe eok eoo eop eos ep- epc epe epo epp eps es- esc ese esk eso esp ess esy eyc eye eyo eyp eys kcc kce kck kcp kcs ke- kec kee kek keo kep kes key kkc kke kkk kkp kks kky koc koe kok koo kop kos koy kpc kpe kpk kpo kpp kps ksc kse ksk kso ksp kss kyc kye kyo kyp kys oc- occ ock oco ocp ocs oec oee oeo oep oes oey okc oke okk oko okp oks oo- ooc ook ooo oop oos op- opc ope opk opo opp ops opy os- osc ose osk oso osp oss oye oyo oys p-p pcc pce pck pco pcp pcs pec pee pek peo pep pes pey pkc pke pko pkp pks pky poc poe pok poo pop pos poy ppc ppe ppk ppo ppp pps ps- psc pse psk pso psp pss psy py- pyc pye pyk pyo pys scc sce sck sco scp scs se- sec see sek seo sep ses sey sk- skc ske skk sko skp sks sky soc soe sok soo sop sos soy spc spe spk spo spp sps spy ss- ssc sse ssk sso ssp sss sy- syc sye syk syp sys ycc yce yco ycp ycs ycy yec yee yek yeo yep yes yey ykk yoc yoe yok yoo yop yos yoy ypo yps ysc yse ysk yso ysp yss ysy yyc yye yys yyy