bbb bbe bbi bbk bbl be- beb bee bei bek bel bez bi- bib bie bii bik bil biz bkb bke bkk bkl blb ble bli blk bll blz bze bzz ebb ebe ebi ebk ebl eeb eee eek eel eib eie eii eik eil ekb eke eki ekl elb ele eli elk ell elz eze ezz ibb ibe ibi ibk ibl ibz ie- iee iei iek iel iib iie iii iil ikb ike iki ikk ikl il- ilb ile ili ilk ill ilz ize izi izz k-z kbb kbe kbi kbk kbl kbz ke- keb kee kei kek kel kez kib kie kii kik kil kiz kkb kke kki kkk kkl kl- klb kli klz lbb lbe lbi lbk lbl leb lee lei lek lel lez lib lie lii lik lil liz lkb lkl llb lle lli llk lll llz lzi zbb zbl zeb zee zek zel zez zib zie zik zil ziz zzz