-ic a-a a-c a-i a-t aaa aac aae aag aai aam aat aax ac- aca acc ace acg aci acm act acx aea aec aee aeg aei aem aet aex ag- aga agc age agg agi agm agt agx ai- aia aic aie aig aii aim ait aix ama amc ame amg ami amm amt amx at- ata atc ate atg ati atm att atx ax- axa axe axi axm axt axx c-- caa cac cae cag cai cam cat cax cca ccc cce ccg cci ccm cct ccx ce- cea cec cee ceg cei cem cet cex cga cgc cge cgg cgi cgm cgt ci- cia cic cie cig cii cim cit cix cma cmc cme cmg cmi cmm cmt cmx cta ctc cte ctg cti ctm ctt ctx cxc cxi cxt cxx eaa eac eae eag eai eam eat eax ec- eca ecc ece ecg eci ecm ect ecx eea eec eee eeg eem eet eex ega egc ege egg egi egm egt egx eia eic eie eig eii eim eit eix em- ema emc eme emg emi emm emt emx eta etc ete etg eti etm ett etx ex- exa exc exe exi ext exx gaa gac gae gag gai gam gat gca gcc gce gcg gci gcm gct ge- gea gec gee geg gei gem get gex gga ggc ggg ggi ggm ggt gia gic gie gig gii gim git gma gmc gme gmg gmi gmm gmt gmx gta gtc gte gtg gti gtm gtt gtx gxa gxt ia- iaa iac iae iag iai iam iat ica icc ice icg ici icm ict ie- iea iec iee ieg iei iem iet iex iga igc ige igg igi igm igt iia iic iie iii iim iit iix im- ima imc ime img imi imm imt imx ita itc ite itg iti itm itt itx ixc ixe ixi maa mac mae mag mai mam mat max mc- mca mcc mce mcg mci mcm mct mcx mea mec mee meg mei mem met mex mga mgc mge mgi mgm mgt mgx mi- mia mic mie mig mii mim mit mix mma mmc mme mmg mmi mmm mmt mmx mta mtc mte mtg mti mtm mtt mtx mxa mxc mxi t-x taa tac tae tag tai tam tat tax tca tcc tce tcg tci tcm tct tcx te- tea tec tee teg tei tem tet tex tga tgc tge tgg tgi tgm tgt tia tic tie tig tii tim tit tix tma tmc tme tmg tmi tmm tmt tmx tta ttc tte ttg tti ttm ttt ttx txe txi txt xaa xac xag xam xat xci xcx xee xeg xem xet xex xge xgi xia xic xie xii xit xix xma xmc xmg xmi xmm xmt xmx xtc xti xtm xtx xxi xxx