-er bbb bbe bbm bbo bbr be- beb bee bem beo ber bjj bjm bjr bmb bme bmj bmm bmo bmr bob boe boj bom boo bor brb bre brj brm bro brr ebb ebe ebj ebm ebo ebr eeb eee eem eeo eer ejo em- emb eme emm emo emr eo- eob eoe eom eoo eor erb ere erm ero err jbj jbm jbo jbr jeb jee jej jem jeo jer jjb jjj jjr jmb jme jmj jmm jmo jmr job joe joj jom joo jor jrb jrm jro jrr m-o m-r mbb mbe mbj mbm mbo mbr meb mee mej mem meo mer mjb mje mjj mjm mjr mmb mme mmj mmm mmo mmr mob moe mom moo mor mrb mre mrj mrm mro mrr ob- obb obe obj obm obo obr oeb oee oem oeo oer ojb oje ojm ojo om- omb ome omj omm omo omr oo- oob oom ooo oor or- orb ore orm oro orr rbb rbe rbm rbo rbr re- reb ree rem reo rer rjm rjr rmb rme rmm rmo rmr rob roe roj rom roo ror rrb rrm rrr