-al a-a a-b a-c a-t aaa aab aac aae aal aat aav aax ab- aba abb abc abe abl abt abv abx ac- aca acb acc ace acl act acv acx aea aeb aec aee ael aet aev aex al- ala alb alc ale all alt alv alx at- ata atb atc ate atl att atv atx av- ava avb avc ave avl avt avx ax- axa axe axl axt axv axx baa bab bac bae bal bat bav bax bba bbb bbc bbe bbl bbt bbx bca bcb bcc bce bcl bct bcv bcx be- bea beb bec bee bel bet bev bex bla blb blc ble bll blt blv blx bta btb btc bte btl btt btv btx bva bvb bvc bve bvl bvt bvv bxb bxl bxx c-- caa cab cac cae cal cat cav cax cba cbb cbc cbe cbl cbt cbv cbx cca ccb ccc cce ccl cct ccv ccx ce- cea ceb cec cee cel cet cev cex cl- cla clb clc cle cll clt clv clx cta ctb ctc cte ctl ctt ctv ctx cva cvb cvc cve cvl cvt cvv cvx cxc cxl cxt cxv cxx eaa eab eac eae eal eat eav eax eba ebb ebc ebe ebl ebt ebv ebx ec- eca ecb ecc ece ecl ect ecv ecx eea eeb eec eee eel eet eev eex ela elb elc ele ell elt elv elx eta etb etc ete etl ett etv etx eva evb evc eve evl evt evv ex- exa exc exe exl ext exx la- laa lab lac lae lal lat lav lax lba lbb lbc lbe lbl lbt lbv lbx lca lcb lcc lce lcl lct lcv lcx lea leb lec lee lel let lev lex lla llb llc lle lll llt llv lta ltb ltc lte ltl ltt ltv ltx lva lvb lvc lve lvl lvt lvv lvx lxc lxv lxx t-x taa tab tac tae tal tat tav tax tba tbb tbc tbe tbl tbt tbv tca tcb tcc tce tcl tct tcv tcx te- tea teb tec tee tel tet tev tex tla tlc tle tll tlt tlv tlx tta ttb ttc tte ttl ttt ttv ttx tva tvb tvc tve tvl tvt tvx txe txl txt v-a v-e vaa vab vac vae val vat vav vax vba vbc vbl vbv vca vcc vce vcl vct vcx vea veb vec vee vel vet vex vl- vla vlb vlc vle vll vlt vlv vta vtb vtc vte vtl vtt vtv vtx vva vvb vvc vvt vvv vxa vxl vxv xaa xac xal xat xav xbc xbe xbl xbx xcb xcl xcv xcx xee xel xet xev xex xla xlb xlt xlv xtc xtv xtx xvl xvt xxl xxv xxx