-er b-u bbb bbe bbg bbm bbn bbr bbu be- beb bee beg bem ben ber beu bez bgb bge bgg bgm bgn bgr bgu bgz bmb bme bmg bmm bmn bmr bmu bmz bnb bne bng bnn bnr bnu bnz brb bre brg brm brn brr bru brz bub bue bug bum bun bur buu buz bze bzn bzr bzu bzz ebb ebe ebg ebm ebn ebr ebu eeb eee eeg eem een eer egb ege egg egm egn egr egu em- emb eme emg emm emn emr emu en- enb ene eng enm enn enr enu enz erb ere erg erm ern err eru erz eu- eub eue eug eun eur eze ezr ezz gbe gbg gbm gbn gbr gbu gbz ge- geb gee geg gem gen ger geu gez ggb ggg ggm ggn ggr ggu ggz gmb gme gmg gmm gmn gmr gmz gnb gne gnm gnn gnr gnu grb gre grg grm grn grr gru gu- gub gue gug gum gun gur guu guz gzr gzu m-r mbb mbe mbg mbm mbr mbu meb mee meg mem men mer meu mez mgb mge mgm mgn mgr mgu mgz mmb mme mmg mmm mmn mmr mmu mmz mnb mne mng mnm mnn mnr mnu mnz mrb mre mrg mrm mrn mrr mru mrz mub mue mug mum mun mur muu mzb mzm mzn nbb nbe nbg nbm nbn nbr nbu ne- neb nee neg nem nen ner neu nez ngb nge ngg ngm ngn ngu nmb nme nmg nmm nmn nmr nmu nmz nnb nne nng nnm nnn nnu nnz nrb nre nrg nrm nrn nrr nru nrz nub nue nug num nun nur nuu nzb nze nzg nzz rbb rbe rbg rbm rbn rbr rbu re- reb ree reg rem ren rer reu rez rgb rge rgg rgn rgr rmb rme rmg rmm rmn rmr rnb rng rnm rnn rnr rnu rnz rrb rrg rrm rrn rrr rru rub rue rug rum run rur ruu ruz rzb rze rzm ubb ube ubg ubn ubr ubu ueb uee ueg uem uen uer ugb uge ugg ugm ugn ugr ugu um- umb ume umg umm umn umr umu un- unb une ung unm unn unr unu ur- urb ure urg urm urn urr uru urz uue uug uum uun uur uuu uzb uzu z-g zbb zbm zbr zeb zee zem zen zer zez zgb zgg zmb zmm zne znn zub zug zum zun zur zuz zzr zzz