c-- ccc cch cck cco ccp ccs ch- chc chh chk cho chp chs chy ckc ckh cko cks cky co- coc coh cok coo cop cos coy cpc cph cpk cpo cpp cps csc csh csk cso csp css csy cyc cyk cyo cyp cys hcc hch hck hco hcp hcs hcy hhc hhh hhk hho hhp hhs hhy hkh hkk hko hkp hks hoc hoh hok hoo hop hos hoy hpc hph hpk hpo hpp hps hpy hsc hsh hsk hsp hss hsy hy- hyc hyh hyo hyp hys hyy kcc kch kck kcp kcs khh khk kho khs kkc kkh kkk kkp kks kky koc koh kok koo kop kos koy kpc kph kpk kpo kpp kps ksc ksh ksk kso ksp kss kyc kyo kyp kys oc- occ och ock oco ocp ocs ohc ohh oho ohp ohs okc okk oko okp oks oo- ooc ooh ook ooo oop oos op- opc oph opk opo opp ops opy os- osc osh osk oso osp oss oyo oys p-p pcc pch pck pco pcp pcs phc phk pho php phs phy pkc pko pkp pks pky poc poh pok poo pop pos poy ppc pph ppk ppo ppp pps ps- psc psh psk pso psp pss psy py- pyc pyk pyo pys scc sch sck sco scp scs sh- shc shh shk sho shp shs shy sk- skc skh skk sko skp sks sky soc soh sok soo sop sos soy spc sph spk spo spp sps spy ss- ssc ssh ssk sso ssp sss sy- syc syh syk syp sys ycc ych yco ycp ycs ycy yhc yhs ykk yoc yok yoo yop yos yoy ypo yps ysc ysk yso ysp yss ysy yyc yys yyy