c-- ccc cce cck cco ccp ccs ccv ce- cec cee cek ceo cep ces cev ckc cko cks co- coc coe cok coo cop cos cov cpc cpe cpk cpo cpp cps cpv csc cse csk cso csp css csv cvc cve cvk cvo cvp cvs cvv ec- ecc ece eck eco ecs ecv eec eee eek eeo eep ees eev ekc eke eko ekp eks ekv eo- eoc eoe eok eoo eop eos ep- epc epe epo epp eps es- esc ese esk eso esp ess esv evc eve evo evp evs evv kcc kce kck kcp kcs ke- kec kee kek keo kep kes kev kkc kke kkk kkp kks kkv koc koe kok koo kop kos kpc kpe kpk kpo kpp kps kpv ksc kse ksk kso ksp kss ksv kvk kvo kvp kvs kvv oc- occ ock oco ocp ocs ocv oec oee oeo oep oes okc oke okk oko okp oks oo- ooc ook ooo oop oos oov op- opc ope opk opo opp ops opv os- osc ose osk oso osp oss osv ov- ovc ove ovo ovp ovs ovv p-p pcc pce pck pco pcp pcs pcv pec pee pek peo pep pes pev pkc pke pko pkp pks poc poe pok poo pop pos pov ppc ppe ppk ppo ppp pps ppv ps- psc pse psk pso psp pss psv pvc pve pvk pvo pvp pvs pvv scc sce sck sco scp scs scv se- sec see sek seo sep ses sev sk- skc ske skk sko skp sks soc soe sok soo sop sos sov spc spe spk spo spp sps spv ss- ssc sse ssk sso ssp sss ssv svc sve svk svo svp svs svv v-e vcc vce vco vcp vcs vec vee vek veo vep ves vkp voc voe vok voo vop vos vov vpc vpe vpk vpo vpp vps vsc vse vsk vso vsp vss vsv vvc vvo vvs vvv