-er bbb bbe bbg bbl bbn bbr bbs be- beb bee beg bel ben ber bes bgb bge bgg bgl bgn bgr bgs blb ble blg bll bln blr bls bnb bne bng bnl bnn bnr bns brb bre brg brl brn brr brs bsb bse bsg bsl bsn bsr bss ebb ebe ebg ebl ebn ebr ebs eeb eee eeg eel een eer ees egb ege egg egl egn egr egs elb ele elg ell eln elr els en- enb ene eng enl enn enr ens erb ere erg erl ern err ers es- esb ese esg esl esn esr ess gbe gbg gbl gbn gbr gbs ge- geb gee geg gel gen ger ges ggb ggg ggn ggr ggs glb gle glg gll gln glr gls gnb gne gnl gnn gnr gns grb gre grg grl grn grr grs gsb gse gsg gsl gsn gsr gss lbb lbe lbg lbl lbr lbs leb lee leg lel len ler les lgb lge lgg lgl lgn lgr lgs llb lle llg lll lln llr lls lnb lne lng lnl lnn lnr lns lrb lrg lrn lrr lrs lsb lse lsg lsl lsn lsr lss nbb nbe nbg nbl nbn nbr nbs ne- neb nee neg nel nen ner nes ngb nge ngg ngl ngn ngs nlb nle nlg nll nln nlr nls nnb nne nng nnl nnn nns nrb nre nrg nrl nrn nrr nrs nsb nse nsg nsl nsn nsr nss rbb rbe rbg rbl rbn rbr rbs re- reb ree reg rel ren rer res rgb rge rgg rgn rgr rgs rle rlg rll rln rlr rls rnb rng rnn rnr rns rrb rrg rrl rrn rrr rrs rsb rse rsg rsl rsn rsr rss sbb sbe sbg sbl sbn sbr sbs se- seb see seg sel sen ser ses sgb sge sgg sgl sgn sgr sgs slb sle slg sll sln slr sls snb sne sng snl snn snr sns sr- srb sre srg srl srn srr srs ss- ssb sse ssg ssl ssn ssr sss