-al a-a a-b a-c aaa aab aac aad aah aak aal ab- aba abb abc abd abh abk abl ac- aca acb acc acd ach ack acl ad- ada adb adc add adh adk adl aha ahb ahc ahd ahh ahk ahl aka akb akc akd akh akk akl al- ala alb alc ald alh alk all baa bab bac bad bah bak bal bba bbb bbc bbd bbh bbk bbl bca bcb bcc bcd bch bck bcl bda bdb bdc bdd bdh bdk bdl bha bhb bhc bhd bhh bhk bhl bka bkb bkc bkk bkl bla blb blc bld blh blk bll c-- caa cab cac cad cah cak cal cba cbb cbc cbd cbh cbk cbl cca ccb ccc ccd cch cck ccl cda cdb cdc cdd cdh cdk cdl ch- cha chb chc chd chh chk chl cka ckb ckc ckd ckh cl- cla clb clc cld clh clk cll daa dab dac dad dah dak dal dba dbb dbc dbd dbh dbk dbl dca dcb dcc dcd dck dcl dda ddb ddc ddd ddh ddk ddl dh- dha dhb dhc dhd dhh dhk dhl dka dkb dkc dkk dkl dl- dla dlb dlc dld dlh dlk dll haa hab hac had hah hak hal hba hbb hbc hbd hbh hbk hbl hca hcb hcc hcd hch hck hcl hda hdb hdc hdd hdh hdk hdl hha hhb hhc hhd hhh hhk hhl hka hkb hkd hkh hkk hkl hla hlb hlc hld hlh hll ka- kaa kab kac kad kah kak kal kba kbb kbc kbd kbh kbk kbl kca kcb kcc kcd kch kck kcl kda kdb kdc kdh kdk kdl kha khh khk kkb kkc kkh kkk kkl kl- kla klb klc kld klh la- laa lab lac lad lah lak lal lba lbb lbc lbd lbh lbk lbl lca lcb lcc lcd lch lck lcl lda ldb ldc ldd ldh ldk ldl lha lhb lhc lhd lhh lhk lka lkb lkh lkl lla llb llc lld llk lll