-al -th a-a a-b a-t aaa aab aah aal aat ab- aba abb abh abl abt aha ahb ahh ahl aht al- ala alb alh all alt at- ata atb ath atl att baa bab bah bal bat bba bbb bbh bbl bbt bha bhb bhh bhl bht bla blb blh bll blt bta btb bth btl btt haa hab hah hal hat hba hbb hbh hbl hbt hha hhb hhh hhl hht hla hlb hlh hll hlt hta htb hth htl htt la- laa lab lah lal lat lba lbb lbh lbl lbt lha lhb lhh lht lla llb lll llt lta ltb lth ltl ltt taa tab tah tal tat tba tbb tbh tbl tbt th- tha thb thh thl tht tla tlh tll tlt tta ttb tth ttl ttt