-er b-u bbb bbe bbm bbn bbr bbu be- beb bee bem ben ber beu bev bmb bme bmm bmn bmr bmu bmv bnb bne bnn bnr bnu bnv brb bre brm brn brr bru brv bub bue bum bun bur buu bvb bve bvm bvn bvr bvu bvv ebb ebe ebm ebn ebr ebu ebv eeb eee eem een eer eev em- emb eme emm emn emr emu emv en- enb ene enm enn enr enu env erb ere erm ern err eru erv eu- eub eue eun eur euv evb eve evm evn evr evv m-r m-v mbb mbe mbm mbr mbu mbv meb mee mem men mer meu mev mmb mme mmm mmn mmr mmu mmv mnb mne mnm mnn mnr mnu mrb mre mrm mrn mrr mru mrv mub mue mum mun mur muu mvb mve mvm mvn mvr mvv nbb nbe nbm nbn nbr nbu nbv ne- neb nee nem nen ner neu nev nmb nme nmm nmn nmr nmu nnb nne nnm nnn nnu nnv nrb nre nrm nrn nrr nru nrv nub nue num nun nur nuu nuv nvb nve nvm nvn nvu nvv rbb rbe rbm rbn rbr rbu re- reb ree rem ren rer reu rev rmb rme rmm rmn rmr rmv rnb rnm rnn rnr rnu rnv rrb rrm rrn rrr rru rub rue rum run rur ruu ruv rvb rve rvm rvn rvr rvu rvv ubb ube ubn ubr ubu ubv ueb uee uem uen uer um- umb ume umm umn umr umu un- unb une unm unn unr unu unv ur- urb ure urm urn urr uru uue uum uun uur uuu uvb uve uvm uvu uvv v-e vbm vbr vbv veb vee vem ven ver veu vm- vmm vmn vmr vmu vn- vnm vnr vnu vnv vrb vre vrm vrn vrr vru vue vum vur vuv vvb vvm vvr vvv