-al a-a a-b a-c aaa aab aac aae aah aak aal ab- aba abb abc abe abh abk abl ac- aca acb acc ace ach ack acl aea aeb aec aee aeh aek ael aha ahb ahc ahe ahh ahk ahl aka akb akc ake akh akk akl al- ala alb alc ale alh alk all baa bab bac bae bah bak bal bba bbb bbc bbe bbh bbk bbl bca bcb bcc bce bch bck bcl be- bea beb bec bee beh bek bel bha bhb bhc bhe bhh bhk bhl bka bkb bkc bke bkk bkl bla blb blc ble blh blk bll c-- caa cab cac cae cah cak cal cba cbb cbc cbe cbh cbk cbl cca ccb ccc cce cch cck ccl ce- cea ceb cec cee ceh cek cel ch- cha chb chc che chh chk chl cka ckb ckc ckh cl- cla clb clc cle clh clk cll eaa eab eac eae eah eak eal eba ebb ebc ebe ebh ebk ebl ec- eca ecb ecc ece ech eck ecl eea eeb eec eee eek eel eha ehb ehc ehe ehh ehl eka ekb ekc eke ekh ekl ela elb elc ele elh elk ell haa hab hac hae hah hak hal hba hbb hbc hbe hbh hbk hbl hca hcb hcc hce hch hck hcl he- hea heb hec hee heh hek hel hha hhb hhc hhe hhh hhk hhl hka hkb hkh hkk hkl hla hlb hlc hle hlh hll ka- kaa kab kac kae kah kak kal kba kbb kbc kbe kbh kbk kbl kca kcb kcc kce kch kck kcl ke- kea keb kec kee keh kek kel kha khe khh khk kkb kkc kke kkh kkk kkl kl- kla klb klc klh la- laa lab lac lae lah lak lal lba lbb lbc lbe lbh lbk lbl lca lcb lcc lce lch lck lcl lea leb lec lee leh lek lel lha lhb lhc lhh lhk lka lkb lkh lkl lla llb llc lle llk lll