-al a-a a-b aaa aab aae aaf aah aak aal ab- aba abb abe abf abh abk abl aea aeb aee aef aeh aek ael af- afa afb afe aff afh afk afl aha ahb ahe ahf ahh ahk ahl aka akb ake akh akk akl al- ala alb ale alf alh alk all baa bab bae baf bah bak bal bba bbb bbe bbf bbh bbk bbl be- bea beb bee bef beh bek bel bfa bfb bfe bff bfh bfl bha bhb bhe bhf bhh bhk bhl bka bkb bke bkf bkk bkl bla blb ble blf blh blk bll eaa eab eae eaf eah eak eal eba ebb ebe ebf ebh ebk ebl eea eeb eee eef eek eel ef- efa efb efe eff efh efl eha ehb ehe ehf ehh ehl eka ekb eke ekf ekh ekl ela elb ele elf elh elk ell faa fab fae faf fah fak fal fba fbb fbe fbf fbh fbk fbl fea feb fee fef feh fek fel ffa ffe fff ffh ffk ffl fha fhb fhe fhf fhh fhl fka fkb fkf fkk fkl fla flb fle flf fll haa hab hae haf hah hak hal hba hbb hbe hbf hbh hbk hbl he- hea heb hee hef heh hek hel hfa hfb hfe hff hfh hfk hfl hha hhb hhe hhf hhh hhk hhl hka hkb hkf hkh hkk hkl hla hlb hle hlf hlh hll ka- kaa kab kae kaf kah kak kal kba kbb kbe kbf kbh kbk kbl ke- kea keb kee kef keh kek kel kfa kff kfh kha khe khf khh khk kkb kke kkh kkk kkl kl- kla klb klf klh la- laa lab lae laf lah lak lal lba lbb lbe lbf lbh lbk lbl lea leb lee lef leh lek lel lfa lfb lfe lff lfh lfk lfl lha lhb lhf lhh lhk lka lkb lkh lkl lla llb lle llf llk lll