-er b-p bbb bbe bbh bbi bbl bbn bbp bbr bbs be- beb bee beh bei bel ben bep ber bes bhb bhe bhh bhi bhl bhp bhr bhs bi- bib bie bih bii bil bin bip bir bis blb ble blh bli bll bln blp blr bls bnb bne bni bnl bnn bnp bnr bns bpb bpe bph bpi bpl bpn bpp bpr bps brb bre brh bri brl brn brp brr brs bsb bse bsh bsi bsl bsn bsp bsr bss ebb ebe ebh ebi ebl ebn ebp ebr ebs eeb eee eel een eep eer ees ehb ehe ehh ehi ehl ehn ehp ehr ehs eib eie eii eil ein eip eir eis elb ele elh eli ell eln elp elr els en- enb ene enh eni enl enn enp enr ens ep- epb epe eph epi epl epn epp epr eps erb ere erh eri erl ern erp err ers es- esb ese esh esi esl esn esp esr ess h-i hbb hbe hbh hbi hbl hbn hbp hbr hbs he- heb hee heh hei hel hen hep her hes hhb hhe hhh hhi hhl hhn hhp hhr hhs hib hie hih hii hil hin hip hir his hlb hle hlh hli hll hln hlp hlr hls hnb hne hnh hnl hnn hns hpb hpe hph hpi hpl hpn hpp hpr hps hr- hrb hre hrh hri hrl hrn hrp hrr hrs hsb hse hsh hsi hsl hsn hsp hsr hss ibb ibe ibh ibi ibl ibn ibp ibr ibs ie- iee iei iel ien iep ier ies ihb ihe ihh ihi ihl ihn ihp ihr ihs iib iie iih iii iil iin iip iir iis il- ilb ile ilh ili ill iln ilp ilr ils in- inb ine inh ini inl inn inp inr ins ipb ipe ipi ipl ipn ipp ipr ips ir- irb ire iri irl irn irp irr irs is- isb ise ish isi isl isn isp isr iss l-p lbb lbe lbh lbi lbl lbp lbr lbs leb lee leh lei lel len lep ler les lhb lhh lhi lhp lhr lhs lib lie lih lii lil lin lip lir lis llb lle lli lll lln llp llr lls lnb lne lnh lni lnl lnn lnp lnr lns lpb lpe lph lpi lpl lpn lpp lpr lps lrb lrh lri lrn lrp lrr lrs lsb lse lsh lsi lsl lsn lsp lsr lss n-i nbb nbe nbi nbl nbn nbp nbr nbs ne- neb nee neh nei nel nen nep ner nes nhb nhe nhh nhi nhl nhn nhp nhr nhs nib nie nih nii nil nin nip nir nis nlb nle nlh nli nll nln nlp nlr nls nnb nne nnh nni nnl nnn nnp nns npb npe nph npi npl npn npp npr nps nrb nre nri nrl nrn nrp nrr nrs nsb nse nsh nsi nsl nsn nsp nsr nss p-p pbb pbe pbi pbl pbn pbp pbr pbs peb pee peh pei pel pen pep per pes phb phe phi phl phn php phr phs pib pie pih pii pil pin pip pir pis plb ple plh pli pll pln plp plr pls pn- pnb pne pnh pni pnl pnn pnp pnr pns ppb ppe pph ppi ppl ppn ppp ppr pps prb pre prh pri prl prn prp prr prs ps- psb pse psh psi psl psn psp psr pss rbb rbe rbh rbi rbl rbn rbp rbr rbs re- reb ree reh rei rel ren rep rer res rh- rhb rhe rhh rhi rhl rhn rhp rhr rhs rib rie rih rii ril rin rip rir ris rle rlh rli rll rln rlp rlr rls rnb rnh rni rnn rnp rnr rns rpb rpe rph rpi rpl rpn rpp rpr rps rrb rrh rri rrl rrn rrp rrr rrs rsb rse rsh rsi rsl rsn rsp rsr rss sbb sbe sbh sbi sbl sbn sbp sbr sbs se- seb see seh sei sel sen sep ser ses sh- shb she shh shi shl shn shp shr shs sib sie sih sii sil sin sip sir sis slb sle slh sli sll sln slp slr sls snb sne sni snl snn snp snr sns spb spe sph spi spl spn spp spr sps sr- srb sre srh sri srl srn srp srr srs ss- ssb sse ssh ssi ssl ssn ssp ssr sss