b-u bbb bbe bbk bbl bbm bbu be- beb bee bek bel bem beu bkb bke bkk bkl bkm blb ble blk bll blm blu bmb bme bmk bml bmm bmu bub bue buk bul bum buu ebb ebe ebk ebl ebm ebu eeb eee eek eel eem ekb eke ekl eku elb ele elk ell elm elu em- emb eme emk eml emm emu eu- eub eue eul kbb kbe kbk kbl kbm kbu ke- keb kee kek kel kem kkb kke kkk kkl kkm kku kl- klb klm klu kmb kme kmk kml kmm kmu kub kue kuk kul kum kuu lbb lbe lbk lbl lbm lbu leb lee lek lel lem leu lkb lkl llb lle llk lll llm llu lmb lme lmk lml lmm lmu lub lue luk lul lum luu mbb mbe mbk mbl mbm mbu meb mee mek mel mem meu mkb mke mkk mkl mkm mku mlb mle mlk mll mlm mlu mmb mme mmk mml mmm mmu mub mue muk mul mum muu ubb ube ubk ubl ubu ueb uee uel uem ukb uke ukk ukl uku ulb ule ulk ull ulm ulu um- umb ume uml umm umu uue uum uuu