-ic a-a a-c a-i a-t aaa aac aag aai aan aao aat aax ac- aca acc acg aci acn aco act acx ag- aga agc agg agi agn ago agt agx ai- aia aic aig aii ain aio ait aix an- ana anc ang ani ann ano ant anx aoa aoc aog aoi aon aoo aot aox at- ata atc atg ati atn ato att atx ax- axa axi axn axo axt axx c-- caa cac cag cai can cao cat cax cca ccc ccg cci ccn cco cct ccx cga cgc cgg cgi cgn cgo cgt ci- cia cic cig cii cin cio cit cix cn- cna cnc cng cni cnn cno cnt cnx co- coa coc cog coi con coo cot cox cta ctc ctg cti ctn cto ctt ctx cxc cxi cxo cxt cxx gaa gac gag gai gan gao gat gca gcc gcg gci gcn gco gct gga ggc ggg ggi ggn ggo ggt gia gic gig gii gin gio git gna gnc gni gnn gno gnt goa goc gog goi gon goo got gox gta gtc gtg gti gtn gto gtt gtx gxa gxt ia- iaa iac iag iai ian iao iat ica icc icg ici icn ico ict iga igc igg igi ign igo igt iia iic iii iin iio iit iix in- ina inc ing ini inn ino int inx io- ioa ioc iog ioi ion ioo iot ita itc itg iti itn ito itt itx ixc ixi ixn n-i naa nac nag nai nan nao nat nax nca ncc ncg nci ncn nco nct ncx nga ngc ngg ngi ngn ngo ngt nia nic nig nii nin nio nit nix nna nnc nng nni nnn nno nnt no- noa noc nog noi non noo not nox nta ntc ntg nti ntn nto ntt ntx nxc nxt o-i oaa oac oag oai oan oao oat oax oc- oca occ ocg oci ocn oco oct ocx oga ogc ogg ogi ogn ogo ogt ogx oia oic oii oin oio oit on- ona onc ong oni onn ono ont onx oo- ooa ooc oog ooi oon ooo oot oox ot- ota otc otg oti otn oto ott ox- oxa oxc oxi oxn oxo oxt oxx t-x taa tac tag tai tan tao tat tax tca tcc tcg tci tcn tco tct tcx tga tgc tgg tgi tgn tgo tgt tia tic tig tii tin tio tit tix tna tnc tng tni tnn tno tnt tnx to- toa toc tog toi ton too tot tox tta ttc ttg tti ttn tto ttt ttx txi txn txt xaa xac xag xan xat xci xcx xgi xia xic xii xin xio xit xix xna xnc xno xoa xoc xog xoi xon xoo xot xox xtc xti xtx xxi xxo xxx