-al -ol -th a-a a-b a-t aaa aab aah aal aan aao aat ab- aba abb abh abl abn abo abt aha ahb ahh ahl ahn aho aht al- ala alb alh all aln alo alt an- ana anb anh anl ann ano ant aoa aob aoh aol aon aoo aot at- ata atb ath atl atn ato att baa bab bah bal ban bao bat bba bbb bbh bbl bbn bbo bbt bha bhb bhh bhl bho bht bla blb blh bll bln blo blt bna bnb bnl bnn bno bnt boa bob boh bol bon boo bot bta btb bth btl btn bto btt haa hab hah hal han hao hat hba hbb hbh hbl hbn hbo hbt hha hhb hhh hhl hhn hho hht hla hlb hlh hll hln hlo hlt hna hnb hnh hnl hnn hno hnt hoa hob hoh hol hon hoo hot hta htb hth htl htn hto htt la- laa lab lah lal lan lao lat lba lbb lbh lbl lbo lbt lha lhb lhh lho lht lla llb lll lln llo llt lna lnb lnh lnl lnn lno lnt loa lob loh lol lon loo lot lta ltb lth ltl lto ltt naa nab nah nal nan nao nat nba nbb nbl nbn nbo nbt nha nhb nhh nhl nhn nht nla nlb nlh nll nln nlo nlt nna nnb nnh nnl nnn nno nnt no- noa nob noh nol non noo not nta ntb nth ntn nto ntt oaa oab oah oal oan oao oat ob- oba obb obh obl obn obo obt oha ohh ohl ohn oho oht ola olb oll oln olo olt on- ona onb onh onl onn ono ont oo- ooa oob ooh ool oon ooo oot ot- ota otb oth otl otn oto ott taa tab tah tal tan tao tat tba tbb tbh tbl tbn tbo tbt th- tha thb thh thl thn tho tht tla tlh tll tln tlo tlt tna tnb tnh tnl tnn tno tnt to- toa tob toh tol ton too tot tta ttb tth ttl ttn tto ttt