-er -th c-- ccc cce cch cco ccp ccr cct ce- cec cee ceh ceo cep cer cet ch- chc che chh cho chp chr cht co- coc coe coh coo cop cor cot cpc cpe cph cpo cpp cpr cpt crc cre crh cro crp crr crt ctc cte cth cto ctp ctr ctt ec- ecc ece ech eco ecr ect eec eee eeo eep eer eet ehc ehe ehh eho ehp ehr eht eo- eoc eoe eoh eoo eop eor eot ep- epc epe eph epo epp epr ept erc ere erh ero erp err ert etc ete eth eto etp etr ett hcc hce hch hco hcp hcr hct he- hec hee heh heo hep her het hhc hhe hhh hho hhp hhr hht hoc hoe hoh hoo hop hor hot hpc hpe hph hpo hpp hpr hpt hr- hrc hre hrh hro hrp hrr hrt htc hte hth hto htp htr htt oc- occ och oco ocp ocr oct oec oee oeh oeo oep oer oet ohc ohe ohh oho ohp ohr oht oo- ooc ooh ooo oop oor oot op- opc ope oph opo opp opr opt or- orc ore orh oro orp orr ort ot- otc ote oth oto otp otr ott p-p pcc pce pch pco pcp pcr pct pec pee peh peo pep per pet phc phe pho php phr pht poc poe poh poo pop por pot ppc ppe pph ppo ppp ppr ppt prc pre prh pro prp prr prt pt- ptc pte pth pto ptp ptr ptt rcc rce rch rco rcp rcr rct re- rec ree reh reo rep rer ret rh- rhc rhe rhh rho rhp rhr rht roc roe roh roo rop ror rot rpc rpe rph rpo rpp rpr rpt rrc rrh rrp rrr rrt rtc rte rto rtp rtr rtt tcc tce tch tco tcp tcr tct te- tec tee teh teo tep ter tet th- thc the thh tho thp thr tht to- toc toe toh too top tor tot tpc tpe tph tpo tpp tpr tpt trc tre trh tro trp trr trt ttc tte tth tto ttp ttr ttt