-er b-u bbb bbd bbe bbm bbn bbr bbu bdb bdd bde bdm bdr bdu be- beb bed bee bem ben ber beu bmb bmd bme bmm bmn bmr bmu bnb bnd bne bnn bnr bnu brb brd bre brm brn brr bru bub bud bue bum bun bur buu dbb dbd dbe dbm dbn dbr dbu ddb ddd dde ddm ddn ddr ddu de- deb ded dee dem den der deu dmb dmd dme dmm dmn dmr dmu dnb dnd dne dnm dnn dnr drb drd dre drm drn drr dru dub dud due dum dun dur ebb ebd ebe ebm ebn ebr ebu ed- edb edd ede edm edn edr edu eeb eed eee eem een eer em- emb emd eme emm emn emr emu en- enb end ene enm enn enr enu erb erd ere erm ern err eru eu- eub eud eue eun eur m-r mbb mbd mbe mbm mbr mbu mdb mdd mde mdm mdn mdr mdu meb med mee mem men mer meu mmb mmd mme mmm mmn mmr mmu mnb mne mnm mnn mnr mnu mrb mrd mre mrm mrn mrr mru mub mud mue mum mun mur muu nbb nbd nbe nbm nbn nbr nbu ndb ndd nde ndm ndn ndr ndu ne- neb ned nee nem nen ner neu nmb nmd nme nmm nmn nmr nmu nnb nne nnm nnn nnu nrb nrd nre nrm nrn nrr nru nub nud nue num nun nur nuu rbb rbd rbe rbm rbn rbr rbu rdb rdd rde rdm rdn rdr rdu re- reb red ree rem ren rer reu rmb rmd rme rmm rmn rmr rnb rnd rnm rnn rnr rnu rrb rrd rrm rrn rrr rru rub rud rue rum run rur ruu ubb ube ubn ubr ubu udb udd ude udm udn udr udu ueb ued uee uem uen uer um- umb umd ume umm umn umr umu un- unb und une unm unn unr unu ur- urb urd ure urm urn urr uru uue uum uun uur uuu