-er c-- ccc cce cch cck ccn cco ccp ccr ce- cec cee ceh cek cen ceo cep cer ch- chc che chh chk chn cho chp chr ckc ckh cko cn- cnc cne cnh cnn cno cnp cnr co- coc coe coh cok con coo cop cor cpc cpe cph cpk cpn cpo cpp cpr crc cre crh crk crn cro crp crr ec- ecc ece ech eck ecn eco ecr eec eee eek een eeo eep eer ehc ehe ehh ehn eho ehp ehr ekc eke ekh eko ekp ekr en- enc ene enh enk enn eno enp enr eo- eoc eoe eoh eok eon eoo eop eor ep- epc epe eph epn epo epp epr erc ere erh erk ern ero erp err hcc hce hch hck hcn hco hcp hcr he- hec hee heh hek hen heo hep her hhc hhe hhh hhk hhn hho hhp hhr hkh hkk hkn hko hkp hkr hnc hne hnh hnk hnn hno hoc hoe hoh hok hon hoo hop hor hpc hpe hph hpk hpn hpo hpp hpr hr- hrc hre hrh hrk hrn hro hrp hrr kcc kce kch kck kcn kcp kcr ke- kec kee keh kek ken keo kep ker khe khh khk khn kho khr kkc kke kkh kkk kkn kkp kkr kn- knc kne knk knn kno knp knr koc koe koh kok kon koo kop kor kpc kpe kph kpk kpn kpo kpp kpr krc krk krn kro krp krr ncc nce nch nck ncn nco ncp ncr ne- nec nee neh nek nen neo nep ner nhc nhe nhh nhk nhn nhp nhr nkc nke nkk nkn nko nkp nkr nnc nne nnh nnk nnn nno nnp no- noc noe noh nok non noo nop nor npc npe nph npn npo npp npr nrc nre nrk nrn nro nrp nrr oc- occ och ock ocn oco ocp ocr oec oee oeh oen oeo oep oer ohc ohe ohh ohn oho ohp ohr okc oke okk oko okp okr on- onc one onh onk onn ono onp onr oo- ooc ooh ook oon ooo oop oor op- opc ope oph opk opn opo opp opr or- orc ore orh ork orn oro orp orr p-p pcc pce pch pck pcn pco pcp pcr pec pee peh pek pen peo pep per phc phe phk phn pho php phr pkc pke pkn pko pkp pkr pn- pnc pne pnh pnk pnn pno pnp pnr poc poe poh pok pon poo pop por ppc ppe pph ppk ppn ppo ppp ppr prc pre prh prk prn pro prp prr rcc rce rch rcn rco rcp rcr re- rec ree reh rek ren reo rep rer rh- rhc rhe rhh rhn rho rhp rhr rkc rke rkk rko rkp rnc rnh rnn rno rnp rnr roc roe roh rok ron roo rop ror rpc rpe rph rpk rpn rpo rpp rpr rrc rrh rrk rrn rrp rrr