-er -ol b-p bbb bbe bbl bbn bbo bbp bbr bbs be- beb bee bel ben beo bep ber bes blb ble bll bln blo blp blr bls bnb bne bnl bnn bno bnp bnr bns bob boe bol bon boo bop bor bos bpb bpe bpl bpn bpo bpp bpr bps brb bre brl brn bro brp brr brs bsb bse bsl bsn bso bsp bsr bss ebb ebe ebl ebn ebo ebp ebr ebs eeb eee eel een eeo eep eer ees elb ele ell eln elo elp elr els en- enb ene enl enn eno enp enr ens eo- eob eoe eol eon eoo eop eor eos ep- epb epe epl epn epo epp epr eps erb ere erl ern ero erp err ers es- esb ese esl esn eso esp esr ess l-p lbb lbe lbl lbo lbp lbr lbs leb lee lel len leo lep ler les llb lle lll lln llo llp llr lls lnb lne lnl lnn lno lnp lnr lns lob loe lol lon loo lop lor los lpb lpe lpl lpn lpo lpp lpr lps lrb lrn lro lrp lrr lrs lsb lse lsl lsn lso lsp lsr lss nbb nbe nbl nbn nbo nbp nbr nbs ne- neb nee nel nen neo nep ner nes nlb nle nll nln nlo nlp nlr nls nnb nne nnl nnn nno nnp nns no- nob noe nol non noo nop nor nos npb npe npl npn npo npp npr nps nrb nre nrl nrn nro nrp nrr nrs nsb nse nsl nsn nso nsp nsr nss ob- obb obe obl obn obo obp obr obs oeb oee oel oen oeo oep oer oes olb ole oll oln olo olp ols on- onb one onl onn ono onp onr ons oo- oob ool oon ooo oop oor oos op- opb ope opl opn opo opp opr ops or- orb ore orl orn oro orp orr ors os- osb ose osl osn oso osp osr oss p-p pbb pbe pbl pbn pbo pbp pbr pbs peb pee pel pen peo pep per pes plb ple pll pln plo plp plr pls pn- pnb pne pnl pnn pno pnp pnr pns pob poe pol pon poo pop por pos ppb ppe ppl ppn ppo ppp ppr pps prb pre prl prn pro prp prr prs ps- psb pse psl psn pso psp psr pss rbb rbe rbl rbn rbo rbp rbr rbs re- reb ree rel ren reo rep rer res rle rll rln rlo rlp rlr rls rnb rnn rno rnp rnr rns rob roe rol ron roo rop ror ros rpb rpe rpl rpn rpo rpp rpr rps rrb rrl rrn rrp rrr rrs rsb rse rsl rsn rso rsp rsr rss sbb sbe sbl sbn sbo sbp sbr sbs se- seb see sel sen seo sep ser ses slb sle sll sln slo slp slr sls snb sne snl snn sno snp snr sns sob soe sol son soo sop sor sos spb spe spl spn spo spp spr sps sr- srb sre srl srn sro srp srr srs ss- ssb sse ssl ssn sso ssp ssr sss