-al -ic a-a a-b a-c a-i a-t aaa aab aac aae aai aal aat aax ab- aba abb abc abe abi abl abt abx ac- aca acb acc ace aci acl act acx aea aeb aec aee aei ael aet aex ai- aia aib aic aie aii ail ait aix al- ala alb alc ale ali all alt alx at- ata atb atc ate ati atl att atx ax- axa axe axi axl axt axx baa bab bac bae bai bal bat bax bba bbb bbc bbe bbi bbl bbt bbx bca bcb bcc bce bci bcl bct bcx be- bea beb bec bee bei bel bet bex bi- bia bib bic bie bii bil bit bix bla blb blc ble bli bll blt blx bta btb btc bte bti btl btt btx bxb bxi bxl bxx c-- caa cab cac cae cai cal cat cax cba cbb cbc cbe cbi cbl cbt cbx cca ccb ccc cce cci ccl cct ccx ce- cea ceb cec cee cei cel cet cex ci- cia cib cic cie cii cil cit cix cl- cla clb clc cle cli cll clt clx cta ctb ctc cte cti ctl ctt ctx cxc cxi cxl cxt cxx eaa eab eac eae eai eal eat eax eba ebb ebc ebe ebi ebl ebt ebx ec- eca ecb ecc ece eci ecl ect ecx eea eeb eec eee eel eet eex eia eib eic eie eii eil eit eix ela elb elc ele eli ell elt elx eta etb etc ete eti etl ett etx ex- exa exc exe exi exl ext exx ia- iaa iab iac iae iai ial iat iba ibb ibc ibe ibi ibl ibt ibx ica icb icc ice ici icl ict ie- iea iec iee iei iel iet iex iia iib iic iie iii iil iit iix il- ila ilb ilc ile ili ill ilt ilx ita itb itc ite iti itl itt itx ixc ixe ixi ixl la- laa lab lac lae lai lal lat lax lba lbb lbc lbe lbi lbl lbt lbx lca lcb lcc lce lci lcl lct lcx lea leb lec lee lei lel let lex lia lib lic lie lii lil lit lix lla llb llc lle lli lll llt lta ltb ltc lte lti ltl ltt ltx lxc lxi lxx t-x taa tab tac tae tai tal tat tax tba tbb tbc tbe tbi tbl tbt tca tcb tcc tce tci tcl tct tcx te- tea teb tec tee tei tel tet tex tia tib tic tie tii til tit tix tla tlc tle tli tll tlt tlx tta ttb ttc tte tti ttl ttt ttx txe txi txl txt xaa xac xal xat xbc xbe xbl xbx xcb xci xcl xcx xee xel xet xex xia xic xie xii xit xix xla xlb xli xlt xtc xti xtx xxi xxl xxx