-al -th a-a a-b a-c a-t aaa aab aac aah aal aat ab- aba abb abc abh abl abt ac- aca acb acc ach acl act aha ahb ahc ahh ahl aht al- ala alb alc alh all alt at- ata atb atc ath atl att baa bab bac bah bal bat bba bbb bbc bbh bbl bbt bca bcb bcc bch bcl bct bha bhb bhc bhh bhl bht bla blb blc blh bll blt bta btb btc bth btl btt c-- caa cab cac cah cal cat cba cbb cbc cbh cbl cbt cca ccb ccc cch ccl cct ch- cha chb chc chh chl cht cl- cla clb clc clh cll clt cta ctb ctc cth ctl ctt haa hab hac hah hal hat hba hbb hbc hbh hbl hbt hca hcb hcc hch hcl hct hha hhb hhc hhh hhl hht hla hlb hlc hlh hll hlt hta htb htc hth htl htt la- laa lab lac lah lal lat lba lbb lbc lbh lbl lbt lca lcb lcc lch lcl lct lha lhb lhc lhh lht lla llb llc lll llt lta ltb ltc lth ltl ltt taa tab tac tah tal tat tba tbb tbc tbh tbl tbt tca tcb tcc tch tcl tct th- tha thb thc thh thl tht tla tlc tlh tll tlt tta ttb ttc tth ttl ttt