-er -ic c-- ccc cce ccg cci cck cco ccp ccr cct ce- cec cee ceg cei cek ceo cep cer cet cgc cge cgg cgi cgo cgp cgr cgt ci- cic cie cig cii cik cio cip cir cit ckc cki cko ckt co- coc coe cog coi cok coo cop cor cot cpc cpe cpg cpi cpk cpo cpp cpr cpt crc cre crg cri crk cro crp crr crt ctc cte ctg cti ctk cto ctp ctr ctt ec- ecc ece ecg eci eck eco ecr ect eec eee eeg eek eeo eep eer eet egc ege egg egi ego egp egr egt eic eie eig eii eik eio eip eir eit ekc eke ekg eki eko ekp ekr ekt eo- eoc eoe eog eoi eok eoo eop eor eot ep- epc epe epg epi epo epp epr ept erc ere erg eri erk ero erp err ert etc ete etg eti etk eto etp etr ett g-p gcc gce gcg gci gck gco gcp gcr gct ge- gec gee geg gei gek geo gep ger get ggc ggg ggi ggo ggp ggr ggt gic gie gig gii gik gio gip gir git gko gkp gkt goc goe gog goi gok goo gop gor got gpc gpe gpg gpi gpk gpo gpp gpr gpt grc gre grg gri grk gro grp grr grt gtc gte gtg gti gtk gto gtp gtr gtt icc ice icg ici ick ico icp icr ict ie- iec iee ieg iei iek iep ier iet igc ige igg igi igk igo igp igr igt iic iie iii iio iip iir iit ikc ike iki ikk iko ikr ikt io- ioc ioe iog ioi ioo iop ior iot ipc ipe ipg ipi ipo ipp ipr ipt ir- irc ire irg iri irk iro irp irr irt itc ite itg iti itk ito itp itt k-t kcc kce kcg kci kck kcp kcr kct ke- kec kee keg kei kek keo kep ker ket kgc kgi kgo kgp kic kie kig kii kik kio kip kir kit kkc kke kki kkk kkp kkr kkt koc koe kog koi kok koo kop kor kot kpc kpe kpi kpk kpo kpp kpr kpt krc krg kri krk kro krp krr krt ktc kte ktg ktk kto ktp ktr ktt o-i oc- occ ocg oci ock oco ocp ocr oct oec oee oeg oei oeo oep oer oet ogc oge ogg ogi ogo ogp ogt oic oie oii oik oio oip oir oit okc oke okg oki okk oko okp okr oo- ooc oog ooi ook ooo oop oor oot op- opc ope opg opi opk opo opp opr opt or- orc ore org ori ork oro orp orr ort ot- otc ote otg oti otk oto otp otr ott p-p pcc pce pcg pci pck pco pcp pcr pct pec pee peg pei pek peo pep per pet pgc pge pgg pgi pgk pgo pgp pgr pgt pic pie pig pii pik pio pip pir pit pkc pke pkg pki pko pkp pkr pkt poc poe pog poi pok poo pop por pot ppc ppe ppg ppi ppk ppo ppp ppr ppt prc pre prg pri prk pro prp prr prt pt- ptc pte ptg pti ptk pto ptp ptr ptt rcc rce rcg rci rco rcp rcr rct re- rec ree reg rei rek reo rep rer ret rgc rge rgg rgi rgk rgo rgp rgr rgt ric rie rig rii rik rio rip rir rit rkc rke rkg rkk rko rkp rkt roc roe rog roi rok roo rop ror rot rpc rpe rpg rpi rpk rpo rpp rpr rpt rrc rrg rri rrk rrp rrr rrt rtc rte rtg rti rtk rto rtp rtr rtt tcc tce tcg tci tck tco tcp tcr tct te- tec tee teg tei tek teo tep ter tet tgc tge tgg tgi tgk tgo tgp tgr tgt tic tie tig tii tik tio tip tir tit tkc tke tkg tkk tko tkp tkr tkt to- toc toe tog toi tok too top tor tot tpc tpe tpg tpi tpk tpo tpp tpr tpt trc tre trg tri trk tro trp trr trt ttc tte ttg tti ttk tto ttp ttr ttt