-er b-p bbb bbe bbg bbi bbl bbn bbp bbr bbs be- beb bee beg bei bel ben bep ber bes bgb bge bgg bgi bgl bgn bgp bgr bgs bi- bib bie big bii bil bin bip bir bis blb ble blg bli bll bln blp blr bls bnb bne bng bni bnl bnn bnp bnr bns bpb bpe bpg bpi bpl bpn bpp bpr bps brb bre brg bri brl brn brp brr brs bsb bse bsg bsi bsl bsn bsp bsr bss ebb ebe ebg ebi ebl ebn ebp ebr ebs eeb eee eeg eel een eep eer ees egb ege egg egi egl egn egp egr egs eib eie eig eii eil ein eip eir eis elb ele elg eli ell eln elp elr els en- enb ene eng eni enl enn enp enr ens ep- epb epe epg epi epl epn epp epr eps erb ere erg eri erl ern erp err ers es- esb ese esg esi esl esn esp esr ess g-p gbe gbg gbi gbl gbn gbp gbr gbs ge- geb gee geg gei gel gen gep ger ges ggb ggg ggi ggn ggp ggr ggs gib gie gig gii gil gin gip gir gis glb gle glg gli gll gln glp glr gls gnb gne gni gnl gnn gnp gnr gns gpb gpe gpg gpi gpl gpn gpp gpr gps grb gre grg gri grl grn grp grr grs gsb gse gsg gsi gsl gsn gsp gsr gss ibb ibe ibg ibi ibl ibn ibp ibr ibs ie- iee ieg iei iel ien iep ier ies igb ige igg igi igl ign igp igr igs iib iie iii iil iin iip iir iis il- ilb ile ilg ili ill iln ilp ilr ils in- inb ine ing ini inl inn inp inr ins ipb ipe ipg ipi ipl ipn ipp ipr ips ir- irb ire irg iri irl irn irp irr irs is- isb ise isg isi isl isn isp isr iss l-p lbb lbe lbg lbi lbl lbp lbr lbs leb lee leg lei lel len lep ler les lgb lge lgg lgi lgl lgn lgp lgr lgs lib lie lig lii lil lin lip lir lis llb lle llg lli lll lln llp llr lls lnb lne lng lni lnl lnn lnp lnr lns lpb lpe lpg lpi lpl lpn lpp lpr lps lrb lrg lri lrn lrp lrr lrs lsb lse lsg lsi lsl lsn lsp lsr lss n-i nbb nbe nbg nbi nbl nbn nbp nbr nbs ne- neb nee neg nei nel nen nep ner nes ngb nge ngg ngi ngl ngn ngp ngs nib nie nig nii nil nin nip nir nis nlb nle nlg nli nll nln nlp nlr nls nnb nne nng nni nnl nnn nnp nns npb npe npg npi npl npn npp npr nps nrb nre nrg nri nrl nrn nrp nrr nrs nsb nse nsg nsi nsl nsn nsp nsr nss p-p pbb pbe pbg pbi pbl pbn pbp pbr pbs peb pee peg pei pel pen pep per pes pgb pge pgg pgi pgl pgn pgp pgr pgs pib pie pig pii pil pin pip pir pis plb ple plg pli pll pln plp plr pls pn- pnb pne png pni pnl pnn pnp pnr pns ppb ppe ppg ppi ppl ppn ppp ppr pps prb pre prg pri prl prn prp prr prs ps- psb pse psg psi psl psn psp psr pss rbb rbe rbg rbi rbl rbn rbp rbr rbs re- reb ree reg rei rel ren rep rer res rgb rge rgg rgi rgn rgp rgr rgs rib rie rig rii ril rin rip rir ris rle rlg rli rll rln rlp rlr rls rnb rng rni rnn rnp rnr rns rpb rpe rpg rpi rpl rpn rpp rpr rps rrb rrg rri rrl rrn rrp rrr rrs rsb rse rsg rsi rsl rsn rsp rsr rss sbb sbe sbg sbi sbl sbn sbp sbr sbs se- seb see seg sei sel sen sep ser ses sgb sge sgg sgi sgl sgn sgp sgr sgs sib sie sig sii sil sin sip sir sis slb sle slg sli sll sln slp slr sls snb sne sng sni snl snn snp snr sns spb spe spg spi spl spn spp spr sps sr- srb sre srg sri srl srn srp srr srs ss- ssb sse ssg ssi ssl ssn ssp ssr sss