-er b-u bbb bbe bbg bbl bbm bbn bbr bbu be- beb bee beg bel bem ben ber beu bgb bge bgg bgl bgm bgn bgr bgu blb ble blg bll blm bln blr blu bmb bme bmg bml bmm bmn bmr bmu bnb bne bng bnl bnn bnr bnu brb bre brg brl brm brn brr bru bub bue bug bul bum bun bur buu ebb ebe ebg ebl ebm ebn ebr ebu eeb eee eeg eel eem een eer egb ege egg egl egm egn egr egu elb ele elg ell elm eln elr elu em- emb eme emg eml emm emn emr emu en- enb ene eng enl enm enn enr enu erb ere erg erl erm ern err eru eu- eub eue eug eul eun eur gbe gbg gbl gbm gbn gbr gbu ge- geb gee geg gel gem gen ger geu ggb ggg ggm ggn ggr ggu glb gle glg gll glm gln glr glu gmb gme gmg gml gmm gmn gmr gnb gne gnl gnm gnn gnr gnu grb gre grg grl grm grn grr gru gu- gub gue gug gul gum gun gur guu lbb lbe lbg lbl lbm lbr lbu leb lee leg lel lem len ler leu lgb lge lgg lgl lgm lgn lgr lgu llb lle llg lll llm lln llr llu lmb lme lmg lml lmm lmn lmr lmu lnb lne lng lnl lnm lnn lnr lnu lrb lrg lrm lrn lrr lru lub lue lug lul lum lun lur luu m-r mbb mbe mbg mbl mbm mbr mbu meb mee meg mel mem men mer meu mgb mge mgl mgm mgn mgr mgu mlb mle mlg mll mlm mln mlr mlu mmb mme mmg mml mmm mmn mmr mmu mnb mne mng mnl mnm mnn mnr mnu mrb mre mrg mrl mrm mrn mrr mru mub mue mug mul mum mun mur muu nbb nbe nbg nbl nbm nbn nbr nbu ne- neb nee neg nel nem nen ner neu ngb nge ngg ngl ngm ngn ngu nlb nle nlg nll nlm nln nlr nlu nmb nme nmg nml nmm nmn nmr nmu nnb nne nng nnl nnm nnn nnu nrb nre nrg nrl nrm nrn nrr nru nub nue nug nul num nun nur nuu rbb rbe rbg rbl rbm rbn rbr rbu re- reb ree reg rel rem ren rer reu rgb rge rgg rgn rgr rle rlg rll rlm rln rlr rlu rmb rme rmg rml rmm rmn rmr rnb rng rnm rnn rnr rnu rrb rrg rrl rrm rrn rrr rru rub rue rug rum run rur ruu ubb ube ubg ubl ubn ubr ubu ueb uee ueg uel uem uen uer ugb uge ugg ugl ugm ugn ugr ugu ulb ule ulg ull ulm uln ulr ulu um- umb ume umg uml umm umn umr umu un- unb une ung unl unm unn unr unu ur- urb ure urg url urm urn urr uru uue uug uum uun uur uuu