-er -ey c-- ccc cce cco ccp ccr ccs ccv ce- cec cee ceo cep cer ces cev cey co- coc coe coo cop cor cos cov coy cpc cpe cpo cpp cpr cps cpv crc cre cro crp crr crs crv cry csc cse cso csp csr css csv csy cvc cve cvo cvp cvr cvs cvv cyc cye cyo cyp cyr cys ec- ecc ece eco ecr ecs ecv eec eee eeo eep eer ees eev eey eo- eoc eoe eoo eop eor eos ep- epc epe epo epp epr eps erc ere ero erp err ers erv ery es- esc ese eso esp esr ess esv esy evc eve evo evp evr evs evv evy eyc eye eyo eyp eyr eys oc- occ oco ocp ocr ocs ocv oec oee oeo oep oer oes oey oo- ooc ooo oop oor oos oov op- opc ope opo opp opr ops opv opy or- orc ore oro orp orr ors orv ory os- osc ose oso osp osr oss osv ov- ovc ove ovo ovp ovs ovv oye oyo oys p-p pcc pce pco pcp pcr pcs pcv pec pee peo pep per pes pev pey poc poe poo pop por pos pov poy ppc ppe ppo ppp ppr pps ppv prc pre pro prp prr prs prv pry ps- psc pse pso psp psr pss psv psy pvc pve pvo pvp pvr pvs pvv py- pyc pye pyo pyr pys rcc rce rco rcp rcr rcs rcv re- rec ree reo rep rer res rev rey roc roe roo rop ror ros rov roy rpc rpe rpo rpp rpr rps rpv rrc rrp rrr rrs rsc rse rso rsp rsr rss rsv rvc rve rvo rvp rvr rvs rvv rvy ry- ryc rye ryo ryr rys ryy scc sce sco scp scr scs scv se- sec see seo sep ser ses sev sey soc soe soo sop sor sos sov soy spc spe spo spp spr sps spv spy sr- src sre sro srp srr srs srv sry ss- ssc sse sso ssp ssr sss ssv svc sve svo svp svr svs svv svy sy- syc sye syp syr sys v-e vcc vce vco vcp vcr vcs vcy vec vee veo vep ver ves vey voc voe voo vop vor vos vov voy vpc vpe vpo vpp vpr vps vrc vre vrp vrr vrs vry vsc vse vso vsp vsr vss vsv vvc vvo vvr vvs vvv vye vyp ycc yce yco ycp ycs ycv ycy yec yee yeo yep yer yes yev yey yoc yoe yoo yop yor yos yoy ypo yps yrc yre yro yrp yrs ysc yse yso ysp ysr yss ysy yve yvo yvr yvy yyc yye yys yyy