-al a-a a-b a-i aaa aab aae aai aak aal ab- aba abb abe abi abk abl aea aeb aee aei aek ael ai- aia aib aie aii aik ail aka akb ake aki akk akl al- ala alb ale ali alk all baa bab bae bai bak bal bba bbb bbe bbi bbk bbl be- bea beb bee bei bek bel bi- bia bib bie bii bik bil bka bkb bke bkk bkl bla blb ble bli blk bll eaa eab eae eai eak eal eba ebb ebe ebi ebk ebl eea eeb eee eek eel eia eib eie eii eik eil eka ekb eke eki ekl ela elb ele eli elk ell ia- iaa iab iae iai ial iba ibb ibe ibi ibk ibl ie- iea iee iei iek iel iia iib iie iii iil ika ikb ike iki ikk ikl il- ila ilb ile ili ilk ill ka- kaa kab kae kai kak kal kba kbb kbe kbi kbk kbl ke- kea keb kee kei kek kel kia kib kie kii kik kil kkb kke kki kkk kkl kl- kla klb kli la- laa lab lae lai lak lal lba lbb lbe lbi lbk lbl lea leb lee lei lek lel lia lib lie lii lik lil lka lkb lkl lla llb lle lli llk lll