-er c-- ccc ccd cce ccf ccg cck ccn ccr ccu cdc cdd cde cdf cdg cdk cdn cdr cdu ce- cec ced cee cef ceg cek cen cer ceu cfc cfd cfe cff cfg cfk cfn cfr cfu cgc cgd cge cgg cgn cgr cgu ckc ckd cn- cnc cnd cne cnf cng cnn cnr cnu crc crd cre crf crg crk crn crr cru cuc cud cue cuf cug cuk cun cur cuu dcc dcd dce dcf dcg dck dcn dcr dcu ddc ddd dde ddf ddg ddk ddn ddr ddu de- dec ded dee def deg dek den der deu dfc dfd dfe dff dfg dfk dfn dfr dfu dgc dgd dge dgf dgg dgk dgn dgr dgu dkc dke dkg dkk dkr dku dnc dnd dne dnf dng dnk dnn dnr drc drd dre drg drk drn drr dru duc dud due duf dug duk dun dur ec- ecc ecd ece ecf ecg eck ecn ecr ecu ed- edc edd ede edf edg edk edn edr edu eec eed eee eef eeg eek een eer ef- efc efd efe eff efg efr egc egd ege egf egg egn egr egu ekc ekd eke ekf ekg ekr eku en- enc end ene enf eng enk enn enr enu erc erd ere erf erg erk ern err eru eu- euc eud eue euf eug eun eur fcc fcd fce fcf fcg fck fcn fcr fcu fdc fdd fde fdf fdg fdk fdn fdr fdu fec fed fee fef feg fek fen fer feu ffc ffd ffe fff ffg ffk ffn ffr ffu fgc fgd fge fgf fgg fgn fgr fkc fkf fkg fkk fnc fnd fne fnf fng fnk fnn fnr fnu frc frd fre frf frg frk frn frr fru fud fue fuf fug fuk fun fur fuu g-d gcc gcd gce gcf gcg gck gcn gcr gcu gdc gdd gde gdf gdk gdn gdr gdu ge- gec ged gee gef geg gek gen ger geu gfc gfd gfe gff gfk gfr ggc ggd ggg ggn ggr ggu gkd gkn gnc gnd gne gnf gnn gnr gnu grc grd gre grf grg grk grn grr gru gu- guc gud gue guf gug guk gun gur guu kcc kcd kce kcg kck kcn kcr kcu kdc kde kdf kdg kdk kdr kdu ke- kec ked kee kef keg kek ken ker kfc kfd kff kfg kfu kgc kgd kgf kgu kkc kke kkk kkn kkr kku kn- knc knd kne knf kng knk knn knr knu krc krd krf krg krk krn krr kru kuc kud kue kug kuk kun kur kuu ncc ncd nce ncf ncg nck ncn ncr ncu ndc ndd nde ndf ndg ndk ndn ndr ndu ne- nec ned nee nef neg nek nen ner neu nfc nfd nfe nff nfk nfn nfr nfu ngc ngd nge ngf ngg ngk ngn ngu nkc nke nkf nkk nkn nkr nku nnc nne nnf nng nnk nnn nnu nrc nrd nre nrf nrg nrk nrn nrr nru nuc nud nue nug nuk nun nur nuu rcc rcd rce rcf rcg rcn rcr rcu rdc rdd rde rdf rdg rdn rdr rdu re- rec red ree ref reg rek ren rer reu rfc rfd rfe rff rfg rfk rfn rfr rfu rgc rgd rge rgf rgg rgk rgn rgr rkc rke rkf rkg rkk rku rnc rnd rng rnn rnr rnu rrc rrd rrf rrg rrk rrn rrr rru ruc rud rue ruf rug ruk run rur ruu ucc ucd uce ucf ucg uck ucn ucr ucu udc udd ude udf udg udk udn udr udu uec ued uee uef ueg uen uer ufc ufd ufe uff ufg ufn ufr ufu ugc uge ugf ugg ugk ugn ugr ugu ukc uke ukf ukk ukn ukr uku un- unc und une unf ung unk unn unr unu ur- urc urd ure urf urg urk urn urr uru uuc uue uug uun uur uuu