-er bbb bbe bbf bbg bbl bbn bbr bbs be- beb bee bef beg bel ben ber bes bfb bfe bff bfg bfl bfn bfr bfs bgb bge bgf bgg bgl bgn bgr bgs blb ble blf blg bll bln blr bls bnb bne bnf bng bnl bnn bnr bns brb bre brf brg brl brn brr brs bsb bse bsf bsg bsl bsn bsr bss ebb ebe ebf ebg ebl ebn ebr ebs eeb eee eef eeg eel een eer ees ef- efb efe eff efg efl efr efs egb ege egf egg egl egn egr egs elb ele elf elg ell eln elr els en- enb ene enf eng enl enn enr ens erb ere erf erg erl ern err ers es- esb ese esf esg esl esn esr ess fbb fbe fbf fbg fbl fbn fbr fbs feb fee fef feg fel fen fer fes ffe fff ffg ffl ffn ffr ffs fgb fge fgf fgg fgl fgn fgr fgs flb fle flf flg fll fln flr fls fnb fne fnf fng fnl fnn fnr fns frb fre frf frg frl frn frr frs fsb fse fsf fsg fsl fsn fsr fss gbe gbf gbg gbl gbn gbr gbs ge- geb gee gef geg gel gen ger ges gfb gfe gff gfl gfr gfs ggb ggg ggn ggr ggs glb gle glf glg gll gln glr gls gnb gne gnf gnl gnn gnr gns grb gre grf grg grl grn grr grs gsb gse gsf gsg gsl gsn gsr gss lbb lbe lbf lbg lbl lbr lbs leb lee lef leg lel len ler les lfb lfe lff lfg lfl lfn lfr lfs lgb lge lgf lgg lgl lgn lgr lgs llb lle llf llg lll lln llr lls lnb lne lng lnl lnn lnr lns lrb lrf lrg lrn lrr lrs lsb lse lsf lsg lsl lsn lsr lss nbb nbe nbf nbg nbl nbn nbr nbs ne- neb nee nef neg nel nen ner nes nfb nfe nff nfl nfn nfr nfs ngb nge ngf ngg ngl ngn ngs nlb nle nlf nlg nll nln nlr nls nnb nne nnf nng nnl nnn nns nrb nre nrf nrg nrl nrn nrr nrs nsb nse nsf nsg nsl nsn nsr nss rbb rbe rbf rbg rbl rbn rbr rbs re- reb ree ref reg rel ren rer res rfb rfe rff rfg rfl rfn rfr rfs rgb rge rgf rgg rgn rgr rgs rle rlf rlg rll rln rlr rls rnb rng rnn rnr rns rrb rrf rrg rrl rrn rrr rrs rsb rse rsf rsg rsl rsn rsr rss sbb sbe sbf sbg sbl sbn sbr sbs se- seb see sef seg sel sen ser ses sfb sfe sff sfg sfl sfn sfr sfs sgb sge sgf sgg sgl sgn sgr sgs slb sle slf slg sll sln slr sls snb sne snf sng snl snn snr sns sr- srb sre srf srg srl srn srr srs ss- ssb sse ssf ssg ssl ssn ssr sss