-er -th c-- ccc cce cch ccp ccr ccs cct ce- cec cee ceh cep cer ces cet ch- chc che chh chp chr chs cht cpc cpe cph cpp cpr cps cpt crc cre crh crp crr crs crt csc cse csh csp csr css cst ctc cte cth ctp ctr cts ctt ec- ecc ece ech ecr ecs ect eec eee eep eer ees eet ehc ehe ehh ehp ehr ehs eht ep- epc epe eph epp epr eps ept erc ere erh erp err ers ert es- esc ese esh esp esr ess est etc ete eth etp etr ets ett hcc hce hch hcp hcr hcs hct he- hec hee heh hep her hes het hhc hhe hhh hhp hhr hhs hht hpc hpe hph hpp hpr hps hpt hr- hrc hre hrh hrp hrr hrs hrt hsc hse hsh hsp hsr hss hst htc hte hth htp htr hts htt p-p pcc pce pch pcp pcr pcs pct pec pee peh pep per pes pet phc phe php phr phs pht ppc ppe pph ppp ppr pps ppt prc pre prh prp prr prs prt ps- psc pse psh psp psr pss pst pt- ptc pte pth ptp ptr pts ptt rcc rce rch rcp rcr rcs rct re- rec ree reh rep rer res ret rh- rhc rhe rhh rhp rhr rhs rht rpc rpe rph rpp rpr rps rpt rrc rrh rrp rrr rrs rrt rsc rse rsh rsp rsr rss rst rtc rte rtp rtr rts rtt scc sce sch scp scr scs sct se- sec see seh sep ser ses set sh- shc she shh shp shr shs sht spc spe sph spp spr sps spt sr- src sre srh srp srr srs srt ss- ssc sse ssh ssp ssr sss sst stc ste sth stp str sts stt tcc tce tch tcp tcr tcs tct te- tec tee teh tep ter tes tet th- thc the thh thp thr ths tht tpc tpe tph tpp tpr tps tpt trc tre trh trp trr trs trt tsc tse tsh tsp tsr tss tst ttc tte tth ttp ttr tts ttt