-al -ic a-a a-c a-i a-t aaa aac aae aag aai aal aat aax ac- aca acc ace acg aci acl act acx aea aec aee aeg aei ael aet aex ag- aga agc age agg agi agl agt agx ai- aia aic aie aig aii ail ait aix al- ala alc ale alg ali all alt alx at- ata atc ate atg ati atl att atx ax- axa axe axi axl axt axx c-- caa cac cae cag cai cal cat cax cca ccc cce ccg cci ccl cct ccx ce- cea cec cee ceg cei cel cet cex cga cgc cge cgg cgi cgl cgt ci- cia cic cie cig cii cil cit cix cl- cla clc cle clg cli cll clt clx cta ctc cte ctg cti ctl ctt ctx cxc cxi cxl cxt cxx eaa eac eae eag eai eal eat eax ec- eca ecc ece ecg eci ecl ect ecx eea eec eee eeg eel eet eex ega egc ege egg egi egl egt egx eia eic eie eig eii eil eit eix ela elc ele elg eli ell elt elx eta etc ete etg eti etl ett etx ex- exa exc exe exi exl ext exx gaa gac gae gag gai gal gat gca gcc gce gcg gci gcl gct ge- gea gec gee geg gei gel get gex gga ggc ggg ggi ggt gia gic gie gig gii gil git gla glc gle glg gli gll glt glx gta gtc gte gtg gti gtl gtt gtx gxa gxl gxt ia- iaa iac iae iag iai ial iat ica icc ice icg ici icl ict ie- iea iec iee ieg iei iel iet iex iga igc ige igg igi igl igt iia iic iie iii iil iit iix il- ila ilc ile ilg ili ill ilt ilx ita itc ite itg iti itl itt itx ixc ixe ixi ixl la- laa lac lae lag lai lal lat lax lca lcc lce lcg lci lcl lct lcx lea lec lee leg lei lel let lex lga lgc lge lgg lgi lgl lgt lia lic lie lig lii lil lit lix lla llc lle llg lli lll llt lta ltc lte ltg lti ltl ltt ltx lxc lxi lxx t-x taa tac tae tag tai tal tat tax tca tcc tce tcg tci tcl tct tcx te- tea tec tee teg tei tel tet tex tga tgc tge tgg tgi tgl tgt tia tic tie tig tii til tit tix tla tlc tle tlg tli tll tlt tlx tta ttc tte ttg tti ttl ttt ttx txe txi txl txt xaa xac xag xal xat xci xcl xcx xee xeg xel xet xex xge xgi xgl xia xic xie xii xit xix xla xlg xli xlt xtc xti xtx xxi xxl xxx