-er c-- ccc cce cch cck cco ccp ccr ce- cec cee ceh cek ceo cep cer ch- chc che chh chk cho chp chr ckc ckh cko co- coc coe coh cok coo cop cor cpc cpe cph cpk cpo cpp cpr crc cre crh crk cro crp crr ec- ecc ece ech eck eco ecr eec eee eek eeo eep eer ehc ehe ehh eho ehp ehr ekc eke ekh eko ekp ekr eo- eoc eoe eoh eok eoo eop eor ep- epc epe eph epo epp epr erc ere erh erk ero erp err hcc hce hch hck hco hcp hcr he- hec hee heh hek heo hep her hhc hhe hhh hhk hho hhp hhr hkh hkk hko hkp hkr hoc hoe hoh hok hoo hop hor hpc hpe hph hpk hpo hpp hpr hr- hrc hre hrh hrk hro hrp hrr kcc kce kch kck kcp kcr ke- kec kee keh kek keo kep ker khe khh khk kho khr kkc kke kkh kkk kkp kkr koc koe koh kok koo kop kor kpc kpe kph kpk kpo kpp kpr krc krk kro krp krr oc- occ och ock oco ocp ocr oec oee oeh oeo oep oer ohc ohe ohh oho ohp ohr okc oke okk oko okp okr oo- ooc ooh ook ooo oop oor op- opc ope oph opk opo opp opr or- orc ore orh ork oro orp orr p-p pcc pce pch pck pco pcp pcr pec pee peh pek peo pep per phc phe phk pho php phr pkc pke pko pkp pkr poc poe poh pok poo pop por ppc ppe pph ppk ppo ppp ppr prc pre prh prk pro prp prr rcc rce rch rco rcp rcr re- rec ree reh rek reo rep rer rh- rhc rhe rhh rho rhp rhr rkc rke rkk rko rkp roc roe roh rok roo rop ror rpc rpe rph rpk rpo rpp rpr rrc rrh rrk rrp rrr