b-u bbb bbe bbg bbk bbl bbu be- beb bee beg bek bel beu bgb bge bgg bgk bgl bgu bkb bke bkg bkk bkl blb ble blg blk bll blu bub bue bug buk bul buu ebb ebe ebg ebk ebl ebu eeb eee eeg eek eel egb ege egg egl egu ekb eke ekg ekl eku elb ele elg elk ell elu eu- eub eue eug eul gbe gbg gbk gbl gbu ge- geb gee geg gek gel geu ggb ggg ggu gkb glb gle glg glk gll glu gu- gub gue gug guk gul guu kbb kbe kbk kbl kbu ke- keb kee keg kek kel kgb kgl kgu kkb kke kkk kkl kku kl- klb klg klu kub kue kug kuk kul kuu lbb lbe lbg lbk lbl lbu leb lee leg lek lel leu lgb lge lgg lgk lgl lgu lkb lkg lkl llb lle llg llk lll llu lub lue lug luk lul luu ubb ube ubg ubk ubl ubu ueb uee ueg uel ugb uge ugg ugk ugl ugu ukb uke ukk ukl uku ulb ule ulg ulk ull ulu uue uug uuu