-ol bbb bbl bbm bbn bbo bbr blb bll blm bln blo blr bmb bml bmm bmn bmo bmr bnb bnl bnn bno bnr bob bol bom bon boo bor brb brl brm brn bro brr lbb lbl lbm lbo lbr llb lll llm lln llo llr lmb lml lmm lmn lmo lmr lnb lnl lnm lnn lno lnr lob lol lom lon loo lor lrb lrm lrn lro lrr m-o m-r mbb mbl mbm mbo mbr mlb mll mlm mln mlo mlr mmb mml mmm mmn mmo mmr mnb mnl mnm mnn mno mnr mob mol mom mon moo mor mrb mrl mrm mrn mro mrr nbb nbl nbm nbn nbo nbr nlb nll nlm nln nlo nlr nmb nml nmm nmn nmo nmr nnb nnl nnm nnn nno no- nob nol nom non noo nor nrb nrl nrm nrn nro nrr ob- obb obl obm obn obo obr olb oll olm oln olo om- omb oml omm omn omo omr on- onb onl onn ono onr oo- oob ool oom oon ooo oor or- orb orl orm orn oro orr rbb rbl rbm rbn rbo rbr rll rlm rln rlo rlr rmb rml rmm rmn rmo rmr rnb rnm rnn rno rnr rob rol rom ron roo ror rrb rrl rrm rrn rrr