-al -ol -th a-a a-b a-t aaa aab aah aal aao aat ab- aba abb abh abl abo abt aha ahb ahh ahl aho aht al- ala alb alh all alo alt aoa aob aoh aol aoo aot at- ata atb ath atl ato att baa bab bah bal bao bat bba bbb bbh bbl bbo bbt bha bhb bhh bhl bho bht bla blb blh bll blo blt boa bob boh bol boo bot bta btb bth btl bto btt haa hab hah hal hao hat hba hbb hbh hbl hbo hbt hha hhb hhh hhl hho hht hla hlb hlh hll hlo hlt hoa hob hoh hol hoo hot hta htb hth htl hto htt la- laa lab lah lal lao lat lba lbb lbh lbl lbo lbt lha lhb lhh lho lht lla llb lll llo llt loa lob loh lol loo lot lta ltb lth ltl lto ltt oaa oab oah oal oao oat ob- oba obb obh obl obo obt oha ohh ohl oho oht ola olb oll olo olt oo- ooa oob ooh ool ooo oot ot- ota otb oth otl oto ott taa tab tah tal tao tat tba tbb tbh tbl tbo tbt th- tha thb thh thl tho tht tla tlh tll tlo tlt to- toa tob toh tol too tot tta ttb tth ttl tto ttt