bbb bbe bbi bbk bbl be- beb bee bei bek bel bev bi- bib bie bii bik bil biv bkb bke bkk bkl bkv blb ble bli blk bll blv bvb bve bvi bvk bvl bvv ebb ebe ebi ebk ebl ebv eeb eee eek eel eev eib eie eii eik eil eiv ekb eke eki ekl ekv elb ele eli elk ell elv evb eve evi evl evv i-v ibb ibe ibi ibk ibl ibv ie- iee iei iek iel iev iib iie iii iil ikb ike iki ikk ikl ikv il- ilb ile ili ilk ill ilv ivb ive ivi ivl ivv kbb kbe kbi kbk kbl ke- keb kee kei kek kel kev kib kie kii kik kil kiv kkb kke kki kkk kkl kkv kl- klb kli klv kvb kvi kvk kvv lbb lbe lbi lbk lbl lbv leb lee lei lek lel lev lib lie lii lik lil liv lkb lkl llb lle lli llk lll llv lvb lve lvi lvl lvv v-e vbi vbk vbl vbv veb vee vei vek vel vi- vib vie vii vik vil viv vkb vl- vlb vle vlk vll vlv vvb vvi vvv