-er -ol b-p bbb bbe bbl bbm bbn bbo bbp bbr bbs be- beb bee bel bem ben beo bep ber bes blb ble bll blm bln blo blp blr bls bmb bme bml bmm bmn bmo bmp bmr bms bnb bne bnl bnn bno bnp bnr bns bob boe bol bom bon boo bop bor bos bpb bpe bpl bpm bpn bpo bpp bpr bps brb bre brl brm brn bro brp brr brs bsb bse bsl bsm bsn bso bsp bsr bss ebb ebe ebl ebm ebn ebo ebp ebr ebs eeb eee eel eem een eeo eep eer ees elb ele ell elm eln elo elp elr els em- emb eme eml emm emn emo emp emr ems en- enb ene enl enm enn eno enp enr ens eo- eob eoe eol eom eon eoo eop eor eos ep- epb epe epl epm epn epo epp epr eps erb ere erl erm ern ero erp err ers es- esb ese esl esm esn eso esp esr ess l-p lbb lbe lbl lbm lbo lbp lbr lbs leb lee lel lem len leo lep ler les llb lle lll llm lln llo llp llr lls lmb lme lml lmm lmn lmo lmp lmr lms lnb lne lnl lnm lnn lno lnp lnr lns lob loe lol lom lon loo lop lor los lpb lpe lpl lpm lpn lpo lpp lpr lps lrb lrm lrn lro lrp lrr lrs lsb lse lsl lsm lsn lso lsp lsr lss m-o m-r mbb mbe mbl mbm mbo mbp mbr mbs meb mee mel mem men meo mep mer mes mlb mle mll mlm mln mlo mlp mlr mls mmb mme mml mmm mmn mmo mmp mmr mms mnb mne mnl mnm mnn mno mnp mnr mns mob moe mol mom mon moo mop mor mos mpb mpe mpl mpm mpn mpo mpp mpr mps mrb mre mrl mrm mrn mro mrp mrr mrs msb mse msl msm msn mso msp msr mss nbb nbe nbl nbm nbn nbo nbp nbr nbs ne- neb nee nel nem nen neo nep ner nes nlb nle nll nlm nln nlo nlp nlr nls nmb nme nml nmm nmn nmo nmp nmr nms nnb nne nnl nnm nnn nno nnp nns no- nob noe nol nom non noo nop nor nos npb npe npl npm npn npo npp npr nps nrb nre nrl nrm nrn nro nrp nrr nrs nsb nse nsl nsm nsn nso nsp nsr nss ob- obb obe obl obm obn obo obp obr obs oeb oee oel oem oen oeo oep oer oes olb ole oll olm oln olo olp ols om- omb ome oml omm omn omo omp omr oms on- onb one onl onn ono onp onr ons oo- oob ool oom oon ooo oop oor oos op- opb ope opl opm opn opo opp opr ops or- orb ore orl orm orn oro orp orr ors os- osb ose osl osm osn oso osp osr oss p-p pbb pbe pbl pbm pbn pbo pbp pbr pbs peb pee pel pem pen peo pep per pes plb ple pll plm pln plo plp plr pls pmb pme pml pmm pmn pmo pmp pmr pms pn- pnb pne pnl pnm pnn pno pnp pnr pns pob poe pol pom pon poo pop por pos ppb ppe ppl ppm ppn ppo ppp ppr pps prb pre prl prm prn pro prp prr prs ps- psb pse psl psm psn pso psp psr pss rbb rbe rbl rbm rbn rbo rbp rbr rbs re- reb ree rel rem ren reo rep rer res rle rll rlm rln rlo rlp rlr rls rmb rme rml rmm rmn rmo rmp rmr rms rnb rnm rnn rno rnp rnr rns rob roe rol rom ron roo rop ror ros rpb rpe rpl rpm rpn rpo rpp rpr rps rrb rrl rrm rrn rrp rrr rrs rsb rse rsl rsm rsn rso rsp rsr rss sbb sbe sbl sbm sbn sbo sbp sbr sbs se- seb see sel sem sen seo sep ser ses slb sle sll slm sln slo slp slr sls smb sme sml smm smn smo smp smr sms snb sne snl snm snn sno snp snr sns sob soe sol som son soo sop sor sos spb spe spl spm spn spo spp spr sps sr- srb sre srl srm srn sro srp srr srs ss- ssb sse ssl ssm ssn sso ssp ssr sss