-er c-- ccc cce ccf cck ccn cco ccp ccr cct ce- cec cee cef cek cen ceo cep cer cet cfc cfe cff cfk cfn cfo cfp cfr cft ckc cko ckt cn- cnc cne cnf cnn cno cnp cnr cnt co- coc coe cof cok con coo cop cor cot cpc cpe cpf cpk cpn cpo cpp cpr cpt crc cre crf crk crn cro crp crr crt ctc cte ctf ctk ctn cto ctp ctr ctt ec- ecc ece ecf eck ecn eco ecr ect eec eee eef eek een eeo eep eer eet ef- efc efe eff efo efp efr eft ekc eke ekf eko ekp ekr ekt en- enc ene enf enk enn eno enp enr ent eo- eoc eoe eof eok eon eoo eop eor eot ep- epc epe epf epn epo epp epr ept erc ere erf erk ern ero erp err ert etc ete etf etk etn eto etp etr ett fcc fce fcf fck fcn fco fcp fcr fct fec fee fef fek fen feo fep fer fet ffc ffe fff ffk ffn ffo ffp ffr fft fkc fkf fkk fkp fkt fnc fne fnf fnk fnn fnp fnr fnt foc foe fof fok fon foo fop for fot fpc fpe fpk fpn fpo fpp fpr fpt frc fre frf frk frn fro frp frr frt ftc fte ftf ftk ftn fto ftp ftr ftt k-t kcc kce kck kcn kcp kcr kct ke- kec kee kef kek ken keo kep ker ket kfc kff kfo kkc kke kkk kkn kkp kkr kkt kn- knc kne knf knk knn kno knp knr knt koc koe kof kok kon koo kop kor kot kpc kpe kpf kpk kpn kpo kpp kpr kpt krc krf krk krn kro krp krr krt ktc kte ktf ktk ktn kto ktp ktr ktt ncc nce ncf nck ncn nco ncp ncr nct ne- nec nee nef nek nen neo nep ner net nfc nfe nff nfk nfn nfo nfp nfr nft nkc nke nkf nkk nkn nko nkp nkr nkt nnc nne nnf nnk nnn nno nnp nnt no- noc noe nof nok non noo nop nor not npc npe npf npn npo npp npr npt nrc nre nrf nrk nrn nro nrp nrr nrt ntc nte ntf ntk ntn nto ntp ntr ntt oc- occ ocf ock ocn oco ocp ocr oct oec oee oef oen oeo oep oer oet of- ofc ofe off ofn ofo ofp ofr oft okc oke okk oko okp okr on- onc one onf onk onn ono onp onr ont oo- ooc oof ook oon ooo oop oor oot op- opc ope opf opk opn opo opp opr opt or- orc ore orf ork orn oro orp orr ort ot- otc ote otf otk otn oto otp otr ott p-p pcc pce pcf pck pcn pco pcp pcr pct pec pee pef pek pen peo pep per pet pfc pfe pff pfk pfn pfo pfp pfr pft pkc pke pkf pkn pko pkp pkr pkt pn- pnc pne pnf pnk pnn pno pnp pnr pnt poc poe pof pok pon poo pop por pot ppc ppe ppf ppk ppn ppo ppp ppr ppt prc pre prf prk prn pro prp prr prt pt- ptc pte ptf ptk ptn pto ptp ptr ptt rcc rce rcf rcn rco rcp rcr rct re- rec ree ref rek ren reo rep rer ret rfc rfe rff rfk rfn rfo rfp rfr rft rkc rke rkf rkk rko rkp rkt rnc rnn rno rnp rnr rnt roc roe rof rok ron roo rop ror rot rpc rpe rpf rpk rpn rpo rpp rpr rpt rrc rrf rrk rrn rrp rrr rrt rtc rte rtf rtk rtn rto rtp rtr rtt tcc tce tcf tck tcn tco tcp tcr tct te- tec tee tef tek ten teo tep ter tet tfc tfe tff tfk tfn tfo tfp tfr tft tkc tke tkk tko tkp tkr tkt tnc tne tnf tnk tnn tno tnp tnr tnt to- toc toe tof tok ton too top tor tot tpc tpe tpf tpk tpn tpo tpp tpr tpt trc tre trf trk trn tro trp trr trt ttc tte ttf ttk ttn tto ttp ttr ttt