-er -ic c-- ccc cce ccf ccg cci cck ccn ccr ccu ce- cec cee cef ceg cei cek cen cer ceu cfc cfe cff cfg cfi cfk cfn cfr cfu cgc cge cgg cgi cgn cgr cgu ci- cic cie cif cig cii cik cin cir ciu ckc cki cn- cnc cne cnf cng cni cnn cnr cnu crc cre crf crg cri crk crn crr cru cuc cue cuf cug cui cuk cun cur cuu ec- ecc ece ecf ecg eci eck ecn ecr ecu eec eee eef eeg eek een eer ef- efc efe eff efg efi efr egc ege egf egg egi egn egr egu eic eie eif eig eii eik ein eir eiu ekc eke ekf ekg eki ekr eku en- enc ene enf eng eni enk enn enr enu erc ere erf erg eri erk ern err eru eu- euc eue euf eug eui eun eur fcc fce fcf fcg fci fck fcn fcr fcu fec fee fef feg fei fek fen fer feu ffc ffe fff ffg ffi ffk ffn ffr ffu fgc fge fgf fgg fgi fgn fgr fic fie fif fig fii fik fin fir fiu fkc fkf fkg fki fkk fnc fne fnf fng fni fnk fnn fnr fnu frc fre frf frg fri frk frn frr fru fue fuf fug fui fuk fun fur fuu gcc gce gcf gcg gci gck gcn gcr gcu ge- gec gee gef geg gei gek gen ger geu gfc gfe gff gfi gfk gfr ggc ggg ggi ggn ggr ggu gic gie gif gig gii gik gin gir giu gkn gnc gne gnf gni gnn gnr gnu grc gre grf grg gri grk grn grr gru gu- guc gue guf gug gui guk gun gur guu i-f icc ice icf icg ici ick icn icr icu ie- iec iee ief ieg iei iek ien ier ifc ife iff ifg ifi ifn ifr ifu igc ige igf igg igi igk ign igr igu iic iie iif iii iin iir iiu ikc ike ikf iki ikk ikr iku in- inc ine inf ing ini ink inn inr inu ir- irc ire irf irg iri irk irn irr iru iu- iuc iue iug iui iur kcc kce kcg kci kck kcn kcr kcu ke- kec kee kef keg kei kek ken ker kfc kff kfg kfi kfu kgc kgf kgi kgu kic kie kif kig kii kik kin kir kiu kkc kke kki kkk kkn kkr kku kn- knc kne knf kng kni knk knn knr knu krc krf krg kri krk krn krr kru kuc kue kug kui kuk kun kur kuu n-i ncc nce ncf ncg nci nck ncn ncr ncu ne- nec nee nef neg nei nek nen ner neu nfc nfe nff nfi nfk nfn nfr nfu ngc nge ngf ngg ngi ngk ngn ngu nic nie nif nig nii nik nin nir niu nkc nke nkf nki nkk nkn nkr nku nnc nne nnf nng nni nnk nnn nnu nrc nre nrf nrg nri nrk nrn nrr nru nuc nue nug nui nuk nun nur nuu rcc rce rcf rcg rci rcn rcr rcu re- rec ree ref reg rei rek ren rer reu rfc rfe rff rfg rfi rfk rfn rfr rfu rgc rge rgf rgg rgi rgk rgn rgr ric rie rif rig rii rik rin rir rkc rke rkf rkg rkk rku rnc rng rni rnn rnr rnu rrc rrf rrg rri rrk rrn rrr rru ruc rue ruf rug rui ruk run rur ruu ucc uce ucf ucg uci uck ucn ucr ucu uec uee uef ueg uei uen uer ufc ufe uff ufg ufi ufn ufr ufu ugc uge ugf ugg ugi ugk ugn ugr ugu uic uie uif uig uii uin uir uiu ukc uke ukf uki ukk ukn ukr uku un- unc une unf ung uni unk unn unr unu ur- urc ure urf urg uri urk urn urr uru uuc uue uug uun uur uuu