-er -ic b-u bbb bbc bbe bbg bbi bbk bbl bbn bbr bbs bbu bcb bcc bce bcg bci bck bcl bcn bcr bcs bcu be- beb bec bee beg bei bek bel ben ber bes beu bgb bgc bge bgg bgi bgk bgl bgn bgr bgs bgu bi- bib bic bie big bii bik bil bin bir bis biu bkb bkc bke bkg bkk bkl bkn bkr bks blb blc ble blg bli blk bll bln blr bls blu bnb bnc bne bng bni bnk bnl bnn bnr bns bnu brb bre brg bri brk brl brn brr brs bru bsb bsc bse bsg bsi bsk bsl bsn bsr bss bsu bub buc bue bug bui buk bul bun bur bus buu c-- cbb cbc cbe cbg cbi cbk cbl cbn cbr cbs cbu ccb ccc cce ccg cci cck ccl ccn ccr ccs ccu ce- ceb cec cee ceg cei cek cel cen cer ces ceu cgb cgc cge cgg cgi cgl cgn cgr cgs cgu ci- cib cic cie cig cii cik cil cin cir cis ciu ckb ckc cki cks cl- clb clc cle clg cli clk cll cln clr cls clu cn- cnb cnc cne cng cni cnl cnn cnr cns cnu crb crc cre crg cri crk crl crn crr crs cru csb csc cse csg csi csk csl csn csr css csu cub cuc cue cug cui cuk cul cun cur cus cuu ebb ebc ebe ebg ebi ebk ebl ebn ebr ebs ebu ec- ecb ecc ece ecg eci eck ecl ecn ecr ecs ecu eeb eec eee eeg eek eel een eer ees egb egc ege egg egi egl egn egr egs egu eib eic eie eig eii eik eil ein eir eis eiu ekb ekc eke ekg eki ekl ekr eks eku elb elc ele elg eli elk ell eln elr els elu en- enb enc ene eng eni enk enl enn enr ens enu erb erc ere erg eri erk erl ern err ers eru es- esb esc ese esg esi esk esl esn esr ess esu eu- eub euc eue eug eui eul eun eur eus gbc gbe gbg gbi gbk gbl gbn gbr gbs gbu gcb gcc gce gcg gci gck gcl gcn gcr gcs gcu ge- geb gec gee geg gei gek gel gen ger ges geu ggb ggc ggg ggi ggn ggr ggs ggu gib gic gie gig gii gik gil gin gir gis giu gkb gkn gks glb glc gle glg gli glk gll gln glr gls glu gnb gnc gne gni gnl gnn gnr gns gnu grb grc gre grg gri grk grl grn grr grs gru gsb gsc gse gsg gsi gsk gsl gsn gsr gss gsu gu- gub guc gue gug gui guk gul gun gur gus guu ibb ibc ibe ibg ibi ibk ibl ibn ibr ibs ibu icb icc ice icg ici ick icl icn icr ics icu ie- iec iee ieg iei iek iel ien ier ies igb igc ige igg igi igk igl ign igr igs igu iib iic iie iii iil iin iir iis iiu ikb ikc ike iki ikk ikl ikr iks iku il- ilb ilc ile ilg ili ilk ill iln ilr ils ilu in- inb inc ine ing ini ink inl inn inr ins inu ir- irb irc ire irg iri irk irl irn irr irs iru is- isb isc ise isg isi isk isl isn isr iss isu iu- iub iuc iue iug iui iur ius kbb kbc kbe kbi kbk kbl kbn kbr kbs kbu kcb kcc kce kcg kci kck kcl kcn kcr kcs kcu ke- keb kec kee keg kei kek kel ken ker kes kgb kgc kgi kgl kgs kgu kib kic kie kig kii kik kil kin kir kis kiu kkb kkc kke kki kkk kkl kkn kkr kks kku kl- klb klc klg kli klr kls klu kn- knc kne kng kni knk knl knn knr knu krc krg kri krk krl krn krr krs kru ksb ksc kse ksg ksi ksk ksl ksn ksr kss ksu kub kuc kue kug kui kuk kul kun kur kus kuu lbb lbc lbe lbg lbi lbk lbl lbr lbs lbu lcb lcc lce lcg lci lck lcl lcn lcr lcs lcu leb lec lee leg lei lek lel len ler les leu lgb lgc lge lgg lgi lgk lgl lgn lgr lgs lgu lib lic lie lig lii lik lil lin lir lis liu lkb lkg lkl lkr lks llb llc lle llg lli llk lll lln llr lls llu lnb lnc lne lng lni lnk lnl lnn lnr lns lnu lrb lrc lrg lri lrk lrn lrr lrs lru lsb lsc lse lsg lsi lsk lsl lsn lsr lss lsu lub luc lue lug lui luk lul lun lur lus luu n-i nbb nbc nbe nbg nbi nbk nbl nbn nbr nbs nbu ncb ncc nce ncg nci nck ncl ncn ncr ncs ncu ne- neb nec nee neg nei nek nel nen ner nes neu ngb ngc nge ngg ngi ngk ngl ngn ngs ngu nib nic nie nig nii nik nil nin nir nis niu nkc nke nki nkk nkn nkr nks nku nlb nlc nle nlg nli nlk nll nln nlr nls nlu nnb nnc nne nng nni nnk nnl nnn nns nnu nrb nrc nre nrg nri nrk nrl nrn nrr nrs nru nsb nsc nse nsg nsi nsk nsl nsn nsr nss nsu nub nuc nue nug nui nuk nul nun nur nus nuu rbb rbc rbe rbg rbi rbk rbl rbn rbr rbs rbu rcb rcc rce rcg rci rcl rcn rcr rcs rcu re- reb rec ree reg rei rek rel ren rer res reu rgb rgc rge rgg rgi rgk rgn rgr rgs rib ric rie rig rii rik ril rin rir ris rkb rkc rke rkg rkk rks rku rlc rle rlg rli rll rln rlr rls rlu rnb rnc rng rni rnn rnr rns rnu rrb rrc