-er -ic c-- ccc ccd cce ccf ccg cci cck ccn ccr cdc cdd cde cdf cdg cdi cdk cdn cdr ce- cec ced cee cef ceg cei cek cen cer cfc cfd cfe cff cfg cfi cfk cfn cfr cgc cgd cge cgg cgi cgn cgr ci- cic cid cie cif cig cii cik cin cir ckc ckd cki cn- cnc cnd cne cnf cng cni cnn cnr crc crd cre crf crg cri crk crn crr dcc dcd dce dcf dcg dci dck dcn dcr ddc ddd dde ddf ddg ddi ddk ddn ddr de- dec ded dee def deg dei dek den der dfc dfd dfe dff dfg dfi dfk dfn dfr dgc dgd dge dgf dgg dgi dgk dgn dgr di- dic did die dif dig dii dik din dir dkc dke dkg dki dkk dkr dnc dnd dne dnf dng dni dnk dnn dnr drc drd dre drg dri drk drn drr ec- ecc ecd ece ecf ecg eci eck ecn ecr ed- edc edd ede edf edg edi edk edn edr eec eed eee eef eeg eek een eer ef- efc efd efe eff efg efi efr egc egd ege egf egg egi egn egr eic eid eie eif eig eii eik ein eir ekc ekd eke ekf ekg eki ekr en- enc end ene enf eng eni enk enn enr erc erd ere erf erg eri erk ern err fcc fcd fce fcf fcg fci fck fcn fcr fdc fdd fde fdf fdg fdi fdk fdn fdr fec fed fee fef feg fei fek fen fer ffc ffd ffe fff ffg ffi ffk ffn ffr fgc fgd fge fgf fgg fgi fgn fgr fic fid fie fif fig fii fik fin fir fkc fkf fkg fki fkk fnc fnd fne fnf fng fni fnk fnn fnr frc frd fre frf frg fri frk frn frr g-d gcc gcd gce gcf gcg gci gck gcn gcr gdc gdd gde gdf gdi gdk gdn gdr ge- gec ged gee gef geg gei gek gen ger gfc gfd gfe gff gfi gfk gfr ggc ggd ggg ggi ggn ggr gic gid gie gif gig gii gik gin gir gkd gkn gnc gnd gne gnf gni gnn gnr grc grd gre grf grg gri grk grn grr i-d i-f icc icd ice icf icg ici ick icn icr idc idd ide idf idg idi idk idn idr ie- iec ied iee ief ieg iei iek ien ier ifc ifd ife iff ifg ifi ifn ifr igc igd ige igf igg igi igk ign igr iic iid iie iif iii iin iir ikc ike ikf iki ikk ikr in- inc ind ine inf ing ini ink inn inr ir- irc ird ire irf irg iri irk irn irr kcc kcd kce kcg kci kck kcn kcr kdc kde kdf kdg kdk kdr ke- kec ked kee kef keg kei kek ken ker kfc kfd kff kfg kfi kgc kgd kgf kgi kic kid kie kif kig kii kik kin kir kkc kke kki kkk kkn kkr kn- knc knd kne knf kng kni knk knn knr krc krd krf krg kri krk krn krr n-i ncc ncd nce ncf ncg nci nck ncn ncr ndc ndd nde ndf ndg ndi ndk ndn ndr ne- nec ned nee nef neg nei nek nen ner nfc nfd nfe nff nfi nfk nfn nfr ngc ngd nge ngf ngg ngi ngk ngn nic nid nie nif nig nii nik nin nir nkc nke nkf nki nkk nkn nkr nnc nne nnf nng nni nnk nnn nrc nrd nre nrf nrg nri nrk nrn nrr rcc rcd rce rcf rcg rci rcn rcr rdc rdd rde rdf rdg rdi rdn rdr re- rec red ree ref reg rei rek ren rer rfc rfd rfe rff rfg rfi rfk rfn rfr rgc rgd rge rgf rgg rgi rgk rgn rgr ric rid rie rif rig rii rik rin rir rkc rke rkf rkg rkk rnc rnd rng rni rnn rnr rrc rrd rrf rrg rri rrk rrn rrr