-er bbb bbe bbg bbi bbk bbl bbn bbr bbs be- beb bee beg bei bek bel ben ber bes bgb bge bgg bgi bgk bgl bgn bgr bgs bi- bib bie big bii bik bil bin bir bis bkb bke bkg bkk bkl bkn bkr bks blb ble blg bli blk bll bln blr bls bnb bne bng bni bnk bnl bnn bnr bns brb bre brg bri brk brl brn brr brs bsb bse bsg bsi bsk bsl bsn bsr bss ebb ebe ebg ebi ebk ebl ebn ebr ebs eeb eee eeg eek eel een eer ees egb ege egg egi egl egn egr egs eib eie eig eii eik eil ein eir eis ekb eke ekg eki ekl ekr eks elb ele elg eli elk ell eln elr els en- enb ene eng eni enk enl enn enr ens erb ere erg eri erk erl ern err ers es- esb ese esg esi esk esl esn esr ess gbe gbg gbi gbk gbl gbn gbr gbs ge- geb gee geg gei gek gel gen ger ges ggb ggg ggi ggn ggr ggs gib gie gig gii gik gil gin gir gis gkb gkn gks glb gle glg gli glk gll gln glr gls gnb gne gni gnl gnn gnr gns grb gre grg gri grk grl grn grr grs gsb gse gsg gsi gsk gsl gsn gsr gss ibb ibe ibg ibi ibk ibl ibn ibr ibs ie- iee ieg iei iek iel ien ier ies igb ige igg igi igk igl ign igr igs iib iie iii iil iin iir iis ikb ike iki ikk ikl ikr iks il- ilb ile ilg ili ilk ill iln ilr ils in- inb ine ing ini ink inl inn inr ins ir- irb ire irg iri irk irl irn irr irs is- isb ise isg isi isk isl isn isr iss kbb kbe kbi kbk kbl kbn kbr kbs ke- keb kee keg kei kek kel ken ker kes kgb kgi kgl kgs kib kie kig kii kik kil kin kir kis kkb kke kki kkk kkl kkn kkr kks kl- klb klg kli klr kls kn- kne kng kni knk knl knn knr krg kri krk krl krn krr krs ksb kse ksg ksi ksk ksl ksn ksr kss lbb lbe lbg lbi lbk lbl lbr lbs leb lee leg lei lek lel len ler les lgb lge lgg lgi lgk lgl lgn lgr lgs lib lie lig lii lik lil lin lir lis lkb lkg lkl lkr lks llb lle llg lli llk lll lln llr lls lnb lne lng lni lnk lnl lnn lnr lns lrb lrg lri lrk lrn lrr lrs lsb lse lsg lsi lsk lsl lsn lsr lss n-i nbb nbe nbg nbi nbk nbl nbn nbr nbs ne- neb nee neg nei nek nel nen ner nes ngb nge ngg ngi ngk ngl ngn ngs nib nie nig nii nik nil nin nir nis nke nki nkk nkn nkr nks nlb nle nlg nli nlk nll nln nlr nls nnb nne nng nni nnk nnl nnn nns nrb nre nrg nri nrk nrl nrn nrr nrs nsb nse nsg nsi nsk nsl nsn nsr nss rbb rbe rbg rbi rbk rbl rbn rbr rbs re- reb ree reg rei rek rel ren rer res rgb rge rgg rgi rgk rgn rgr rgs rib rie rig rii rik ril rin rir ris rkb rke rkg rkk rks rle rlg rli rll rln rlr rls rnb rng rni rnn rnr rns rrb rrg rri rrk rrl rrn rrr rrs rsb rse rsg rsi rsk rsl rsn rsr rss sbb sbe sbg sbi sbk sbl sbn sbr sbs se- seb see seg sei sek sel sen ser ses sgb sge sgg sgi sgk sgl sgn sgr sgs sib sie sig sii sik sil sin sir sis sk- skb ske skg ski skk skl skr sks slb sle slg sli slk sll sln slr sls snb sne sng sni snk snl snn snr sns sr- srb sre srg sri srk srl srn srr srs ss- ssb sse ssg ssi ssk ssl ssn ssr sss