-er -ic c-- ccc cce ccf ccg cci cck ccp ccr ce- cec cee cef ceg cei cek cep cer cfc cfe cff cfg cfi cfk cfp cfr cgc cge cgg cgi cgp cgr ci- cic cie cif cig cii cik cip cir ckc cki cpc cpe cpf cpg cpi cpk cpp cpr crc cre crf crg cri crk crp crr ec- ecc ece ecf ecg eci eck ecr eec eee eef eeg eek eep eer ef- efc efe eff efg efi efp efr egc ege egf egg egi egp egr eic eie eif eig eii eik eip eir ekc eke ekf ekg eki ekp ekr ep- epc epe epf epg epi epp epr erc ere erf erg eri erk erp err fcc fce fcf fcg fci fck fcp fcr fec fee fef feg fei fek fep fer ffc ffe fff ffg ffi ffk ffp ffr fgc fge fgf fgg fgi fgp fgr fic fie fif fig fii fik fip fir fkc fkf fkg fki fkk fkp fpc fpe fpg fpi fpk fpp fpr frc fre frf frg fri frk frp frr g-p gcc gce gcf gcg gci gck gcp gcr ge- gec gee gef geg gei gek gep ger gfc gfe gff gfi gfk gfp gfr ggc ggg ggi ggp ggr gic gie gif gig gii gik gip gir gkp gpc gpe gpf gpg gpi gpk gpp gpr grc gre grf grg gri grk grp grr i-f icc ice icf icg ici ick icp icr ie- iec iee ief ieg iei iek iep ier ifc ife iff ifg ifi ifp ifr igc ige igf igg igi igk igp igr iic iie iif iii iip iir ikc ike ikf iki ikk ikr ipc ipe ipf ipg ipi ipp ipr ir- irc ire irf irg iri irk irp irr kcc kce kcg kci kck kcp kcr ke- kec kee kef keg kei kek kep ker kfc kff kfg kfi kgc kgf kgi kgp kic kie kif kig kii kik kip kir kkc kke kki kkk kkp kkr kpc kpe kpf kpi kpk kpp kpr krc krf krg kri krk krp krr p-p pcc pce pcf pcg pci pck pcp pcr pec pee pef peg pei pek pep per pfc pfe pff pfg pfi pfk pfp pfr pgc pge pgf pgg pgi pgk pgp pgr pic pie pif pig pii pik pip pir pkc pke pkf pkg pki pkp pkr ppc ppe ppf ppg ppi ppk ppp ppr prc pre prf prg pri prk prp prr rcc rce rcf rcg rci rcp rcr re- rec ree ref reg rei rek rep rer rfc rfe rff rfg rfi rfk rfp rfr rgc rge rgf rgg rgi rgk rgp rgr ric rie rif rig rii rik rip rir rkc rke rkf rkg rkk rkp rpc rpe rpf rpg rpi rpk rpp rpr rrc rrf rrg rri rrk rrp rrr