-er b-u bbb bbd bbe bbk bbm bbn bbr bbu bdb bdd bde bdk bdm bdr bdu be- beb bed bee bek bem ben ber beu bkb bke bkk bkm bkn bkr bmb bmd bme bmk bmm bmn bmr bmu bnb bnd bne bnk bnn bnr bnu brb brd bre brk brm brn brr bru bub bud bue buk bum bun bur buu dbb dbd dbe dbk dbm dbn dbr dbu ddb ddd dde ddk ddm ddn ddr ddu de- deb ded dee dek dem den der deu dkb dke dkk dkm dkr dku dmb dmd dme dmk dmm dmn dmr dmu dnb dnd dne dnk dnm dnn dnr drb drd dre drk drm drn drr dru dub dud due duk dum dun dur ebb ebd ebe ebk ebm ebn ebr ebu ed- edb edd ede edk edm edn edr edu eeb eed eee eek eem een eer ekb ekd eke ekr eku em- emb emd eme emk emm emn emr emu en- enb end ene enk enm enn enr enu erb erd ere erk erm ern err eru eu- eub eud eue eun eur kbb kbd kbe kbk kbm kbn kbr kbu kdb kde kdk kdm kdr kdu ke- keb ked kee kek kem ken ker kkb kke kkk kkm kkn kkr kku kmb kmd kme kmk kmm kmu kn- knd kne knk knm knn knr knu krd krk krn krr kru kub kud kue kuk kum kun kur kuu m-r mbb mbd mbe mbk mbm mbr mbu mdb mdd mde mdk mdm mdn mdr mdu meb med mee mek mem men mer meu mkb mkd mke mkk mkm mkn mkr mku mmb mmd mme mmk mmm mmn mmr mmu mnb mne mnk mnm mnn mnr mnu mrb mrd mre mrk mrm mrn mrr mru mub mud mue muk mum mun mur muu nbb nbd nbe nbk nbm nbn nbr nbu ndb ndd nde ndk ndm ndn ndr ndu ne- neb ned nee nek nem nen ner neu nke nkk nkm nkn nkr nku nmb nmd nme nmk nmm nmn nmr nmu nnb nne nnk nnm nnn nnu nrb nrd nre nrk nrm nrn nrr nru nub nud nue nuk num nun nur nuu rbb rbd rbe rbk rbm rbn rbr rbu rdb rdd rde rdm rdn rdr rdu re- reb red ree rek rem ren rer reu rkb rke rkk rkm rku rmb rmd rme rmm rmn rmr rnb rnd rnm rnn rnr rnu rrb rrd rrk rrm rrn rrr rru rub rud rue ruk rum run rur ruu ubb ube ubk ubn ubr ubu udb udd ude udk udm udn udr udu ueb ued uee uem uen uer ukb uke ukk ukn ukr uku um- umb umd ume umm umn umr umu un- unb und une unk unm unn unr unu ur- urb urd ure urk urm urn urr uru uue uum uun uur uuu