-ic a-a a-c a-i a-t aaa aac aae aag aai aan aao aas aat aax ac- aca acc ace acg aci acn aco acs act acx aea aec aee aeg aei aen aeo aes aet aex ag- aga agc age agg agi agn ago ags agt agx ai- aia aic aie aig aii ain aio ais ait aix an- ana anc ane ang ani ann ano ans ant anx aoa aoc aoe aog aoi aon aoo aos aot aox as- asa asc ase asg asi asn aso ass ast asx at- ata atc ate atg ati atn ato ats att atx ax- axa axe axi axn axo axs axt axx c-- caa cac cae cag cai can cao cas cat cax cca ccc cce ccg cci ccn cco ccs cct ccx ce- cea cec cee ceg cei cen ceo ces cet cex cga cgc cge cgg cgi cgn cgo cgs cgt ci- cia cic cie cig cii cin cio cis cit cix cn- cna cnc cne cng cni cnn cno cns cnt cnx co- coa coc coe cog coi con coo cos cot cox csa csc cse csg csi csn cso css cst csx cta ctc cte ctg cti ctn cto cts ctt ctx cxc cxi cxo cxs cxt cxx eaa eac eae eag eai ean eao eas eat eax ec- eca ecc ece ecg eci ecn eco ecs ect ecx eea eec eee eeg een eeo ees eet eex ega egc ege egg egi egn ego egs egt egx eia eic eie eig eii ein eio eis eit eix en- ena enc ene eng eni enn eno ens ent eo- eoa eoc eoe eog eoi eon eoo eos eot es- esa esc ese esg esi esn eso ess est esx eta etc ete etg eti etn eto ets ett etx ex- exa exc exe exi exo exs ext exx gaa gac gae gag gai gan gao gas gat gca gcc gce gcg gci gcn gco gcs gct ge- gea gec gee geg gei gen geo ges get gex gga ggc ggg ggi ggn ggo ggs ggt gia gic gie gig gii gin gio gis git gna gnc gne gni gnn gno gns gnt goa goc goe gog goi gon goo gos got gox gsa gsc gse gsg gsi gsn gso gss gst gsx gta gtc gte gtg gti gtn gto gts gtt gtx gxa gxs gxt ia- iaa iac iae iag iai ian iao ias iat ica icc ice icg ici icn ico ics ict ie- iea iec iee ieg iei ien ies iet iex iga igc ige igg igi ign igo igs igt iia iic iie iii iin iio iis iit iix in- ina inc ine ing ini inn ino ins int inx io- ioa ioc ioe iog ioi ion ioo ios iot is- isa isc ise isg isi isn iso iss ist ita itc ite itg iti itn ito its itt itx ixc ixe ixi ixn n-i naa nac nae nag nai nan nao nas nat nax nca ncc nce ncg nci ncn nco ncs nct ncx ne- nea nec nee neg nei nen neo nes net nex nga ngc nge ngg ngi ngn ngo ngs ngt nia nic nie nig nii nin nio nis nit nix nna nnc nne nng nni nnn nno nns nnt no- noa noc noe nog noi non noo nos not nox nsa nsc nse nsg nsi nsn nso nss nst nsx nta ntc nte ntg nti ntn nto nts ntt ntx nxc nxt o-i oaa oac oae oag oai oan oao oas oat oax oc- oca occ ocg oci ocn oco ocs oct ocx oea oec oee oeg oei oen oeo oes oet oex oga ogc oge ogg ogi ogn ogo ogs ogt ogx oia oic oie oii oin oio ois oit on- ona onc one ong oni onn ono ons ont onx oo- ooa ooc oog ooi oon ooo oos oot oox os- osa osc ose osg osi osn oso oss ost osx ot- ota otc ote otg oti otn oto ots ott ox- oxa oxc oxi oxn oxo oxt oxx saa sac sae sag sai san sao sas sat sax sca scc sce scg sci scn sco scs sct scx se- sea sec see seg sei sen seo ses set sex sga sgc sge sgg sgi sgn sgo sgs sgt sgx sia sic sie sig sii sin sio sis sit six sna snc sne sng sni snn sno sns snt soa soc soe sog soi son soo sos sot sox ss- ssa ssc sse ssg ssi ssn sso sss sst ssx sta stc ste stg sti stn sto sts stt stx sxc sxi sxn sxs sxt t-x taa tac tae tag tai tan tao tas tat tax tca tcc tce tcg tci tcn tco tcs tct tcx te- tea tec tee teg tei ten teo tes tet tex tga tgc tge tgg tgi tgn tgo tgs tgt tia tic tie tig tii tin tio tis tit tix tna tnc tne tng tni tnn tno tns tnt tnx to- toa toc toe tog toi ton too tos tot tox tsa tsc tse tsg tsi tsn tso tss tst tsx tta ttc tte ttg tti ttn tto tts ttt ttx txe txi txn txs txt xaa xac xag xan xas xat xci xcx xee xeg xen xes xet xex xge xgi xia xic xie xii xin xio xis xit xix xna xnc xno xns xoa xoc xog xoi xon xoo xos xot xox xsa xsc xsi xss xst xtc xti xts xtx xxi xxo xxx