-er -ic c-- ccc cce ccf ccg cci cck ccn ccr ce- cec cee cef ceg cei cek cen cer cfc cfe cff cfg cfi cfk cfn cfr cgc cge cgg cgi cgn cgr ci- cic cie cif cig cii cik cin cir ckc cki cn- cnc cne cnf cng cni cnn cnr crc cre crf crg cri crk crn crr ec- ecc ece ecf ecg eci eck ecn ecr eec eee eef eeg eek een eer ef- efc efe eff efg efi efr egc ege egf egg egi egn egr eic eie eif eig eii eik ein eir ekc eke ekf ekg eki ekr en- enc ene enf eng eni enk enn enr erc ere erf erg eri erk ern err fcc fce fcf fcg fci fck fcn fcr fec fee fef feg fei fek fen fer ffc ffe fff ffg ffi ffk ffn ffr fgc fge fgf fgg fgi fgn fgr fic fie fif fig fii fik fin fir fkc fkf fkg fki fkk fnc fne fnf fng fni fnk fnn fnr frc fre frf frg fri frk frn frr gcc gce gcf gcg gci gck gcn gcr ge- gec gee gef geg gei gek gen ger gfc gfe gff gfi gfk gfr ggc ggg ggi ggn ggr gic gie gif gig gii gik gin gir gkn gnc gne gnf gni gnn gnr grc gre grf grg gri grk grn grr i-f icc ice icf icg ici ick icn icr ie- iec iee ief ieg iei iek ien ier ifc ife iff ifg ifi ifn ifr igc ige igf igg igi igk ign igr iic iie iif iii iin iir ikc ike ikf iki ikk ikr in- inc ine inf ing ini ink inn inr ir- irc ire irf irg iri irk irn irr kcc kce kcg kci kck kcn kcr ke- kec kee kef keg kei kek ken ker kfc kff kfg kfi kgc kgf kgi kic kie kif kig kii kik kin kir kkc kke kki kkk kkn kkr kn- knc kne knf kng kni knk knn knr krc krf krg kri krk krn krr n-i ncc nce ncf ncg nci nck ncn ncr ne- nec nee nef neg nei nek nen ner nfc nfe nff nfi nfk nfn nfr ngc nge ngf ngg ngi ngk ngn nic nie nif nig nii nik nin nir nkc nke nkf nki nkk nkn nkr nnc nne nnf nng nni nnk nnn nrc nre nrf nrg nri nrk nrn nrr rcc rce rcf rcg rci rcn rcr re- rec ree ref reg rei rek ren rer rfc rfe rff rfg rfi rfk rfn rfr rgc rge rgf rgg rgi rgk rgn rgr ric rie rif rig rii rik rin rir rkc rke rkf rkg rkk rnc rng rni rnn rnr rrc rrf rrg rri rrk rrn rrr