b-u bbb bbe bbg bbk bbl bbn bbu be- beb bee beg bek bel ben beu bgb bge bgg bgk bgl bgn bgu bkb bke bkg bkk bkl bkn blb ble blg blk bll bln blu bnb bne bng bnk bnl bnn bnu bub bue bug buk bul bun buu ebb ebe ebg ebk ebl ebn ebu eeb eee eeg eek eel een egb ege egg egl egn egu ekb eke ekg ekl eku elb ele elg elk ell eln elu en- enb ene eng enk enl enn enu eu- eub eue eug eul eun gbe gbg gbk gbl gbn gbu ge- geb gee geg gek gel gen geu ggb ggg ggn ggu gkb gkn glb gle glg glk gll gln glu gnb gne gnl gnn gnu gu- gub gue gug guk gul gun guu kbb kbe kbk kbl kbn kbu ke- keb kee keg kek kel ken kgb kgl kgu kkb kke kkk kkl kkn kku kl- klb klg klu kn- kne kng knk knl knn knu kub kue kug kuk kul kun kuu lbb lbe lbg lbk lbl lbu leb lee leg lek lel len leu lgb lge lgg lgk lgl lgn lgu lkb lkg lkl llb lle llg llk lll lln llu lnb lne lng lnk lnl lnn lnu lub lue lug luk lul lun luu nbb nbe nbg nbk nbl nbn nbu ne- neb nee neg nek nel nen neu ngb nge ngg ngk ngl ngn ngu nke nkk nkn nku nlb nle nlg nlk nll nln nlu nnb nne nng nnk nnl nnn nnu nub nue nug nuk nul nun nuu ubb ube ubg ubk ubl ubn ubu ueb uee ueg uel uen ugb uge ugg ugk ugl ugn ugu ukb uke ukk ukl ukn uku ulb ule ulg ulk ull uln ulu un- unb une ung unk unl unn unu uue uug uun uuu