-er b-p bbb bbd bbe bbi bbl bbn bbp bbr bbs bdb bdd bde bdi bdl bdp bdr bds be- beb bed bee bei bel ben bep ber bes bi- bib bid bie bii bil bin bip bir bis blb bld ble bli bll bln blp blr bls bnb bnd bne bni bnl bnn bnp bnr bns bpb bpd bpe bpi bpl bpn bpp bpr bps brb brd bre bri brl brn brp brr brs bsb bsd bse bsi bsl bsn bsp bsr bss dbb dbd dbe dbi dbl dbn dbp dbr dbs ddb ddd dde ddi ddl ddn ddp ddr dds de- deb ded dee dei del den dep der des di- dib did die dii dil din dip dir dis dl- dlb dld dle dli dll dlp dlr dls dnb dnd dne dni dnl dnn dnp dnr dns dpb dpd dpe dpi dpl dpn dpp dpr dps drb drd dre dri drl drn drp drr drs dsb dsd dse dsi dsl dsn dsp dsr dss ebb ebd ebe ebi ebl ebn ebp ebr ebs ed- edb edd ede edi edl edn edp edr eds eeb eed eee eel een eep eer ees eib eid eie eii eil ein eip eir eis elb eld ele eli ell eln elp elr els en- enb end ene eni enl enn enp enr ens ep- epb epd epe epi epl epn epp epr eps erb erd ere eri erl ern erp err ers es- esb esd ese esi esl esn esp esr ess i-d ibb ibd ibe ibi ibl ibn ibp ibr ibs idb idd ide idi idl idn idp idr ids ie- ied iee iei iel ien iep ier ies iib iid iie iii iil iin iip iir iis il- ilb ild ile ili ill iln ilp ilr ils in- inb ind ine ini inl inn inp inr ins ipb ipd ipe ipi ipl ipn ipp ipr ips ir- irb ird ire iri irl irn irp irr irs is- isb isd ise isi isl isn isp isr iss l-p lbb lbd lbe lbi lbl lbp lbr lbs ldb ldd lde ldi ldl ldn ldp ldr lds leb led lee lei lel len lep ler les lib lid lie lii lil lin lip lir lis llb lld lle lli lll lln llp llr lls lnb lnd lne lni lnl lnn lnp lnr lns lpb lpd lpe lpi lpl lpn lpp lpr lps lrb lrd lri lrn lrp lrr lrs lsb lsd lse lsi lsl lsn lsp lsr lss n-i nbb nbd nbe nbi nbl nbn nbp nbr nbs ndb ndd nde ndi ndl ndn ndp ndr nds ne- neb ned nee nei nel nen nep ner nes nib nid nie nii nil nin nip nir nis nlb nld nle nli nll nln nlp nlr nls nnb nne nni nnl nnn nnp nns npb npd npe npi npl npn npp npr nps nrb nrd nre nri nrl nrn nrp nrr nrs nsb nsd nse nsi nsl nsn nsp nsr nss p-p pbb pbd pbe pbi pbl pbn pbp pbr pbs pdb pdd pde pdi pdl pdn pdp pdr pds peb ped pee pei pel pen pep per pes pib pid pie pii pil pin pip pir pis plb pld ple pli pll pln plp plr pls pn- pnb pnd pne pni pnl pnn pnp pnr pns ppb ppd ppe ppi ppl ppn ppp ppr pps prb prd pre pri prl prn prp prr prs ps- psb psd pse psi psl psn psp psr pss rbb rbd rbe rbi rbl rbn rbp rbr rbs rdb rdd rde rdi rdl rdn rdp rdr rds re- reb red ree rei rel ren rep rer res rib rid rie rii ril rin rip rir ris rld rle rli rll rln rlp rlr rls rnb rnd rni rnn rnp rnr rns rpb rpd rpe rpi rpl rpn rpp rpr rps rrb rrd rri rrl rrn rrp rrr rrs rsb rsd rse rsi rsl rsn rsp rsr rss sbb sbd sbe sbi sbl sbn sbp sbr sbs sdb sdd sde sdi sdl sdn sdp sdr sds se- seb sed see sei sel sen sep ser ses sib sid sie sii sil sin sip sir sis slb sld sle sli sll sln slp slr sls snb snd sne sni snl snn snp snr sns spb spd spe spi spl spn spp spr sps sr- srb srd sre sri srl srn srp srr srs ss- ssb ssd sse ssi ssl ssn ssp ssr sss