-al -th a-a a-b a-i a-t aaa aab aae aah aai aal aat aax ab- aba abb abe abh abi abl abt abx aea aeb aee aeh aei ael aet aex aha ahb ahe ahh ahi ahl aht ahx ai- aia aib aie aih aii ail ait aix al- ala alb ale alh ali all alt alx at- ata atb ate ath ati atl att atx ax- axa axe axh axi axl axt axx baa bab bae bah bai bal bat bax bba bbb bbe bbh bbi bbl bbt bbx be- bea beb bee beh bei bel bet bex bha bhb bhe bhh bhi bhl bht bhx bi- bia bib bie bih bii bil bit bix bla blb ble blh bli bll blt blx bta btb bte bth bti btl btt btx bxb bxi bxl bxx eaa eab eae eah eai eal eat eax eba ebb ebe ebh ebi ebl ebt ebx eea eeb eee eel eet eex eha ehb ehe ehh ehi ehl eht eia eib eie eii eil eit eix ela elb ele elh eli ell elt elx eta etb ete eth eti etl ett etx ex- exa exe exh exi exl ext exx h-i haa hab hae hah hai hal hat hax hba hbb hbe hbh hbi hbl hbt hbx he- hea heb hee heh hei hel het hex hha hhb hhe hhh hhi hhl hht hia hib hie hih hii hil hit hix hla hlb hle hlh hli hll hlt hlx hta htb hte hth hti htl htt htx hxl ia- iaa iab iae iah iai ial iat iba ibb ibe ibh ibi ibl ibt ibx ie- iea iee iei iel iet iex iha ihb ihe ihh ihi ihl iht iia iib iie iih iii iil iit iix il- ila ilb ile ilh ili ill ilt ilx ita itb ite ith iti itl itt itx ixe ixi ixl la- laa lab lae lah lai lal lat lax lba lbb lbe lbh lbi lbl lbt lbx lea leb lee leh lei lel let lex lha lhb lhh lhi lht lhx lia lib lie lih lii lil lit lix lla llb lle lli lll llt lta ltb lte lth lti ltl ltt ltx lxi lxx t-x taa tab tae tah tai tal tat tax tba tbb tbe tbh tbi tbl tbt te- tea teb tee teh tei tel tet tex th- tha thb the thh thi thl tht thx tia tib tie tih tii til tit tix tla tle tlh tli tll tlt tlx tta ttb tte tth tti ttl ttt ttx txe txi txl txt xaa xal xat xbe xbl xbx xee xel xet xex xht xia xie xii xit xix xla xlb xli xlt xti xtx xxi xxl xxx