-al -th a-a a-b a-t aaa aab aae aah aal aat aax ab- aba abb abe abh abl abt abx aea aeb aee aeh ael aet aex aha ahb ahe ahh ahl aht ahx al- ala alb ale alh all alt alx at- ata atb ate ath atl att atx ax- axa axe axh axl axt axx baa bab bae bah bal bat bax bba bbb bbe bbh bbl bbt bbx be- bea beb bee beh bel bet bex bha bhb bhe bhh bhl bht bhx bla blb ble blh bll blt blx bta btb bte bth btl btt btx bxb bxl bxx eaa eab eae eah eal eat eax eba ebb ebe ebh ebl ebt ebx eea eeb eee eel eet eex eha ehb ehe ehh ehl eht ela elb ele elh ell elt elx eta etb ete eth etl ett etx ex- exa exe exh exl ext exx haa hab hae hah hal hat hax hba hbb hbe hbh hbl hbt hbx he- hea heb hee heh hel het hex hha hhb hhe hhh hhl hht hla hlb hle hlh hll hlt hlx hta htb hte hth htl htt htx hxl la- laa lab lae lah lal lat lax lba lbb lbe lbh lbl lbt lbx lea leb lee leh lel let lex lha lhb lhh lht lhx lla llb lle lll llt lta ltb lte lth ltl ltt ltx lxx t-x taa tab tae tah tal tat tax tba tbb tbe tbh tbl tbt te- tea teb tee teh tel tet tex th- tha thb the thh thl tht thx tla tle tlh tll tlt tlx tta ttb tte tth ttl ttt ttx txe txl txt xaa xal xat xbe xbl xbx xee xel xet xex xht xla xlb xlt xtx xxl xxx