-er -ol bbb bbe bbl bbm bbn bbo bbr be- beb bee bel bem ben beo ber blb ble bll blm bln blo blr bmb bme bml bmm bmn bmo bmr bnb bne bnl bnn bno bnr bob boe bol bom bon boo bor brb bre brl brm brn bro brr ebb ebe ebl ebm ebn ebo ebr eeb eee eel eem een eeo eer elb ele ell elm eln elo elr em- emb eme eml emm emn emo emr en- enb ene enl enm enn eno enr eo- eob eoe eol eom eon eoo eor erb ere erl erm ern ero err lbb lbe lbl lbm lbo lbr leb lee lel lem len leo ler llb lle lll llm lln llo llr lmb lme lml lmm lmn lmo lmr lnb lne lnl lnm lnn lno lnr lob loe lol lom lon loo lor lrb lrm lrn lro lrr m-o m-r mbb mbe mbl mbm mbo mbr meb mee mel mem men meo mer mlb mle mll mlm mln mlo mlr mmb mme mml mmm mmn mmo mmr mnb mne mnl mnm mnn mno mnr mob moe mol mom mon moo mor mrb mre mrl mrm mrn mro mrr nbb nbe nbl nbm nbn nbo nbr ne- neb nee nel nem nen neo ner nlb nle nll nlm nln nlo nlr nmb nme nml nmm nmn nmo nmr nnb nne nnl nnm nnn nno no- nob noe nol nom non noo nor nrb nre nrl nrm nrn nro nrr ob- obb obe obl obm obn obo obr oeb oee oel oem oen oeo oer olb ole oll olm oln olo om- omb ome oml omm omn omo omr on- onb one onl onn ono onr oo- oob ool oom oon ooo oor or- orb ore orl orm orn oro orr rbb rbe rbl rbm rbn rbo rbr re- reb ree rel rem ren reo rer rle rll rlm rln rlo rlr rmb rme rml rmm rmn rmo rmr rnb rnm rnn rno rnr rob roe rol rom ron roo ror rrb rrl rrm rrn rrr