-al a-a a-b aaa aab aad aaf aah aal ab- aba abb abd abf abh abl ad- ada adb add adf adh adl af- afa afb afd aff afh afl aha ahb ahd ahf ahh ahl al- ala alb ald alf alh all baa bab bad baf bah bal bba bbb bbd bbf bbh bbl bda bdb bdd bdf bdh bdl bfa bfb bfd bff bfh bfl bha bhb bhd bhf bhh bhl bla blb bld blf blh bll daa dab dad daf dah dal dba dbb dbd dbf dbh dbl dda ddb ddd ddf ddh ddl dfa dfb dfd dff dfh dfl dh- dha dhb dhd dhf dhh dhl dl- dla dlb dld dlf dlh dll faa fab fad faf fah fal fba fbb fbd fbf fbh fbl fda fdb fdd fdf fdh fdl ffa ffd fff ffh ffl fha fhb fhf fhh fhl fla flb fld flf fll haa hab had haf hah hal hba hbb hbd hbf hbh hbl hda hdb hdd hdf hdh hdl hfa hfb hfd hff hfh hfl hha hhb hhd hhf hhh hhl hla hlb hld hlf hlh hll la- laa lab lad laf lah lal lba lbb lbd lbf lbh lbl lda ldb ldd ldf ldh ldl lfa lfb lfd lff lfh lfl lha lhb lhd lhf lhh lla llb lld llf lll