-er -ey c-- ccc cce ccp ccr ccs cct ce- cec cee cep cer ces cet cey cpc cpe cpp cpr cps cpt crc cre crp crr crs crt cry csc cse csp csr css cst csy ctc cte ctp ctr cts ctt cty cyc cye cyp cyr cys cyt ec- ecc ece ecr ecs ect eec eee eep eer ees eet eey ep- epc epe epp epr eps ept erc ere erp err ers ert ery es- esc ese esp esr ess est esy etc ete etp etr ets ett ety eyc eye eyp eyr eys eyt p-p pcc pce pcp pcr pcs pct pec pee pep per pes pet pey ppc ppe ppp ppr pps ppt prc pre prp prr prs prt pry ps- psc pse psp psr pss pst psy pt- ptc pte ptp ptr pts ptt pty py- pyc pye pyr pys pyt rcc rce rcp rcr rcs rct re- rec ree rep rer res ret rey rpc rpe rpp rpr rps rpt rrc rrp rrr rrs rrt rsc rse rsp rsr rss rst rtc rte rtp rtr rts rtt rty ry- ryc rye ryr rys ryy scc sce scp scr scs sct se- sec see sep ser ses set sey spc spe spp spr sps spt spy sr- src sre srp srr srs srt sry ss- ssc sse ssp ssr sss sst stc ste stp str sts stt sty sy- syc sye syp syr sys syt tcc tce tcp tcr tcs tct te- tec tee tep ter tes tet tey tpc tpe tpp tpr tps tpt trc tre trp trr trs trt try tsc tse tsp tsr tss tst tsy ttc tte ttp ttr tts ttt tty tyc tye typ tyr tys tyt ycc yce ycp ycs ycy yec yee yep yer yes yet yey yps yrc yre yrp yrs yrt ysc yse ysp ysr yss yst ysy ytc yte ytp ytr yts ytt yyc yye yys yyt yyy