-al -th a-a a-b a-c a-t aaa aab aac aae aah aal aat ab- aba abb abc abe abh abl abt ac- aca acb acc ace ach acl act aea aeb aec aee aeh ael aet aha ahb ahc ahe ahh ahl aht al- ala alb alc ale alh all alt at- ata atb atc ate ath atl att baa bab bac bae bah bal bat bba bbb bbc bbe bbh bbl bbt bca bcb bcc bce bch bcl bct be- bea beb bec bee beh bel bet bha bhb bhc bhe bhh bhl bht bla blb blc ble blh bll blt bta btb btc bte bth btl btt c-- caa cab cac cae cah cal cat cba cbb cbc cbe cbh cbl cbt cca ccb ccc cce cch ccl cct ce- cea ceb cec cee ceh cel cet ch- cha chb chc che chh chl cht cl- cla clb clc cle clh cll clt cta ctb ctc cte cth ctl ctt eaa eab eac eae eah eal eat eba ebb ebc ebe ebh ebl ebt ec- eca ecb ecc ece ech ecl ect eea eeb eec eee eel eet eha ehb ehc ehe ehh ehl eht ela elb elc ele elh ell elt eta etb etc ete eth etl ett haa hab hac hae hah hal hat hba hbb hbc hbe hbh hbl hbt hca hcb hcc hce hch hcl hct he- hea heb hec hee heh hel het hha hhb hhc hhe hhh hhl hht hla hlb hlc hle hlh hll hlt hta htb htc hte hth htl htt la- laa lab lac lae lah lal lat lba lbb lbc lbe lbh lbl lbt lca lcb lcc lce lch lcl lct lea leb lec lee leh lel let lha lhb lhc lhh lht lla llb llc lle lll llt lta ltb ltc lte lth ltl ltt taa tab tac tae tah tal tat tba tbb tbc tbe tbh tbl tbt tca tcb tcc tce tch tcl tct te- tea teb tec tee teh tel tet th- tha thb thc the thh thl tht tla tlc tle tlh tll tlt tta ttb ttc tte tth ttl ttt