-al -ic -ol a-a a-c a-i a-t aaa aac aae aag aai aal aao aat aax ac- aca acc ace acg aci acl aco act acx aea aec aee aeg aei ael aeo aet aex ag- aga agc age agg agi agl ago agt agx ai- aia aic aie aig aii ail aio ait aix al- ala alc ale alg ali all alo alt alx aoa aoc aoe aog aoi aol aoo aot aox at- ata atc ate atg ati atl ato att atx ax- axa axe axi axl axo axt axx c-- caa cac cae cag cai cal cao cat cax cca ccc cce ccg cci ccl cco cct ccx ce- cea cec cee ceg cei cel ceo cet cex cga cgc cge cgg cgi cgl cgo cgt ci- cia cic cie cig cii cil cio cit cix cl- cla clc cle clg cli cll clo clt clx co- coa coc coe cog coi col coo cot cox cta ctc cte ctg cti ctl cto ctt ctx cxc cxi cxl cxo cxt cxx eaa eac eae eag eai eal eao eat eax ec- eca ecc ece ecg eci ecl eco ect ecx eea eec eee eeg eel eeo eet eex ega egc ege egg egi egl ego egt egx eia eic eie eig eii eil eio eit eix ela elc ele elg eli ell elo elt elx eo- eoa eoc eoe eog eoi eol eoo eot eta etc ete etg eti etl eto ett etx ex- exa exc exe exi exl exo ext exx gaa gac gae gag gai gal gao gat gca gcc gce gcg gci gcl gco gct ge- gea gec gee geg gei gel geo get gex gga ggc ggg ggi ggo ggt gia gic gie gig gii gil gio git gla glc gle glg gli gll glo glt glx goa goc goe gog goi gol goo got gox gta gtc gte gtg gti gtl gto gtt gtx gxa gxl gxt ia- iaa iac iae iag iai ial iao iat ica icc ice icg ici icl ico ict ie- iea iec iee ieg iei iel iet iex iga igc ige igg igi igl igo igt iia iic iie iii iil iio iit iix il- ila ilc ile ilg ili ill ilo ilt ilx io- ioa ioc ioe iog ioi iol ioo iot ita itc ite itg iti itl ito itt itx ixc ixe ixi ixl la- laa lac lae lag lai lal lao lat lax lca lcc lce lcg lci lcl lco lct lcx lea lec lee leg lei lel leo let lex lga lgc lge lgg lgi lgl lgo lgt lia lic lie lig lii lil lio lit lix lla llc lle llg lli lll llo llt loa loc loe log loi lol loo lot lox lta ltc lte ltg lti ltl lto ltt ltx lxc lxi lxo lxx o-i oaa oac oae oag oai oal oao oat oax oc- oca occ ocg oci ocl oco oct ocx oea oec oee oeg oei oel oeo oet oex oga ogc oge ogg ogi ogl ogo ogt ogx oia oic oie oii oil oio oit ola olc ole olg oli oll olo olt oo- ooa ooc oog ooi ool ooo oot oox ot- ota otc ote otg oti otl oto ott ox- oxa oxc oxi oxo oxt oxx t-x taa tac tae tag tai tal tao tat tax tca tcc tce tcg tci tcl tco tct tcx te- tea tec tee teg tei tel teo tet tex tga tgc tge tgg tgi tgl tgo tgt tia tic tie tig tii til tio tit tix tla tlc tle tlg tli tll tlo tlt tlx to- toa toc toe tog toi tol too tot tox tta ttc tte ttg tti ttl tto 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 xio xit xix xla xlg xli xlt xoa xoc xog xoi xoo xot xox xtc xti xtx xxi xxl xxo xxx