-er -ol b-u bbb bbe bbl bbm bbn bbo bbr bbu be- beb bee bel bem ben beo ber beu blb ble bll blm bln blo blr blu bmb bme bml bmm bmn bmo bmr bmu bnb bne bnl bnn bno bnr bnu bob boe bol bom bon boo bor bou brb bre brl brm brn bro brr bru bub bue bul bum bun buo bur buu ebb ebe ebl ebm ebn ebo ebr ebu eeb eee eel eem een eeo eer elb ele ell elm eln elo elr elu em- emb eme eml emm emn emo emr emu en- enb ene enl enm enn eno enr enu eo- eob eoe eol eom eon eoo eor eou erb ere erl erm ern ero err eru eu- eub eue eul eun eur lbb lbe lbl lbm lbo lbr lbu leb lee lel lem len leo ler leu llb lle lll llm lln llo llr llu lmb lme lml lmm lmn lmo lmr lmu lnb lne lnl lnm lnn lno lnr lnu lob loe lol lom lon loo lor lou lrb lrm lrn lro lrr lru lub lue lul lum lun luo lur luu m-o m-r mbb mbe mbl mbm mbo mbr mbu meb mee mel mem men meo mer meu mlb mle mll mlm mln mlo mlr mlu mmb mme mml mmm mmn mmo mmr mmu mnb mne mnl mnm mnn mno mnr mnu mob moe mol mom mon moo mor mou mrb mre mrl mrm mrn mro mrr mru mub mue mul mum mun mur muu nbb nbe nbl nbm nbn nbo nbr nbu ne- neb nee nel nem nen neo ner neu nlb nle nll nlm nln nlo nlr nlu nmb nme nml nmm nmn nmo nmr nmu nnb nne nnl nnm nnn nno nnu no- nob noe nol nom non noo nor nou nrb nre nrl nrm nrn nro nrr nru nub nue nul num nun nuo nur nuu ob- obb obe obl obm obn obo obr obu oeb oee oel oem oen oeo oer olb ole oll olm oln olo olu om- omb ome oml omm omn omo omr omu on- onb one onl onn ono onr onu oo- oob ool oom oon ooo oor or- orb ore orl orm orn oro orr oru ou- oue oul oum oun ouo our rbb rbe rbl rbm rbn rbo rbr rbu re- reb ree rel rem ren reo rer reu rle rll rlm rln rlo rlr rlu rmb rme rml rmm rmn rmo rmr rnb rnm rnn rno rnr rnu rob roe rol rom ron roo ror rou rrb rrl rrm rrn rrr rru rub rue rum run ruo rur ruu ubb ube ubl ubn ubo ubr ubu ueb uee uel uem uen uer ulb ule ull ulm uln ulo ulr ulu um- umb ume uml umm umn umo umr umu un- unb une unl unm unn uno unr unu uob uoe uol uom uon uoo uor ur- urb ure url urm urn uro urr uru uue uum uun uur uuu