-er bbb bbd bbe bbl bbn bbr bbs bdb bdd bde bdl bdr bds be- beb bed bee bel ben ber bes blb bld ble bll bln blr bls bnb bnd bne bnl bnn bnr bns brb brd bre brl brn brr brs bsb bsd bse bsl bsn bsr bss dbb dbd dbe dbl dbn dbr dbs ddb ddd dde ddl ddn ddr dds de- deb ded dee del den der des dl- dlb dld dle dll dlr dls dnb dnd dne dnl dnn dnr dns drb drd dre drl drn drr drs dsb dsd dse dsl dsn dsr dss ebb ebd ebe ebl ebn ebr ebs ed- edb edd ede edl edn edr eds eeb eed eee eel een eer ees elb eld ele ell eln elr els en- enb end ene enl enn enr ens erb erd ere erl ern err ers es- esb esd ese esl esn esr ess lbb lbd lbe lbl lbr lbs ldb ldd lde ldl ldn ldr lds leb led lee lel len ler les llb lld lle lll lln llr lls lnb lnd lne lnl lnn lnr lns lrb lrd lrn lrr lrs lsb lsd lse lsl lsn lsr lss nbb nbd nbe nbl nbn nbr nbs ndb ndd nde ndl ndn ndr nds ne- neb ned nee nel nen ner nes nlb nld nle nll nln nlr nls nnb nne nnl nnn nns nrb nrd nre nrl nrn nrr nrs nsb nsd nse nsl nsn nsr nss rbb rbd rbe rbl rbn rbr rbs rdb rdd rde rdl rdn rdr rds re- reb red ree rel ren rer res rld rle rll rln rlr rls rnb rnd rnn rnr rns rrb rrd rrl rrn rrr rrs rsb rsd rse rsl rsn rsr rss sbb sbd sbe sbl sbn sbr sbs sdb sdd sde sdl sdn sdr sds se- seb sed see sel sen ser ses slb sld sle sll sln slr sls snb snd sne snl snn snr sns sr- srb srd sre srl srn srr srs ss- ssb ssd sse ssl ssn ssr sss