-er -th c-- ccc cce cch cck cco ccp ccr cct ce- cec cee ceh cek ceo cep cer cet ch- chc che chh chk cho chp chr cht ckc ckh cko ckt co- coc coe coh cok coo cop cor cot cpc cpe cph cpk cpo cpp cpr cpt crc cre crh crk cro crp crr crt ctc cte cth ctk cto ctp ctr ctt ec- ecc ece ech eck eco ecr ect eec eee eek eeo eep eer eet ehc ehe ehh eho ehp ehr eht ekc eke ekh eko ekp ekr ekt eo- eoc eoe eoh eok eoo eop eor eot ep- epc epe eph epo epp epr ept erc ere erh erk ero erp err ert etc ete eth etk eto etp etr ett hcc hce hch hck hco hcp hcr hct he- hec hee heh hek heo hep her het hhc hhe hhh hhk hho hhp hhr hht hkh hkk hko hkp hkr hkt hoc hoe hoh hok hoo hop hor hot hpc hpe hph hpk hpo hpp hpr hpt hr- hrc hre hrh hrk hro hrp hrr hrt htc hte hth htk hto htp htr htt k-t kcc kce kch kck kcp kcr kct ke- kec kee keh kek keo kep ker ket khe khh khk kho khr kkc kke kkh kkk kkp kkr kkt koc koe koh kok koo kop kor kot kpc kpe kph kpk kpo kpp kpr kpt krc krk kro krp krr krt ktc kte kth ktk kto ktp ktr ktt oc- occ och ock oco ocp ocr oct oec oee oeh oeo oep oer oet ohc ohe ohh oho ohp ohr oht okc oke okk oko okp okr oo- ooc ooh ook ooo oop oor oot op- opc ope oph opk opo opp opr opt or- orc ore orh ork oro orp orr ort ot- otc ote oth otk oto otp otr ott p-p pcc pce pch pck pco pcp pcr pct pec pee peh pek peo pep per pet phc phe phk pho php phr pht pkc pke pko pkp pkr pkt poc poe poh pok poo pop por pot ppc ppe pph ppk ppo ppp ppr ppt prc pre prh prk pro prp prr prt pt- ptc pte pth ptk pto ptp ptr ptt rcc rce rch rco rcp rcr rct re- rec ree reh rek reo rep rer ret rh- rhc rhe rhh rho rhp rhr rht rkc rke rkk rko rkp rkt roc roe roh rok roo rop ror rot rpc rpe rph rpk rpo rpp rpr rpt rrc rrh rrk rrp rrr rrt rtc rte rtk rto rtp rtr rtt tcc tce tch tck tco tcp tcr tct te- tec tee teh tek teo tep ter tet th- thc the thh thk tho thp thr tht tkc tke tkk tko tkp tkr tkt to- toc toe toh tok too top tor tot tpc tpe tph tpk tpo tpp tpr tpt trc tre trh trk tro trp trr trt ttc tte tth ttk tto ttp ttr ttt