-ic a-a a-c a-i a-t aaa aac aad aae aag aai aas aat ac- aca acc acd ace acg aci acs act ad- ada adc add ade adg adi ads adt aea aec aed aee aeg aei aes aet ag- aga agc agd age agg agi ags agt ai- aia aic aid aie aig aii ais ait as- asa asc asd ase asg asi ass ast at- ata atc atd ate atg ati ats att c-- caa cac cad cae cag cai cas cat cca ccc ccd cce ccg cci ccs cct cda cdc cdd cde cdg cdi cds cdt ce- cea cec ced cee ceg cei ces cet cga cgc cgd cge cgg cgi cgs cgt ci- cia cic cid cie cig cii cis cit csa csc csd cse csg csi css cst cta ctc ctd cte ctg cti cts ctt daa dac dad dae dag dai das dat dca dcc dcd dce dcg dci dcs dct dda ddc ddd dde ddg ddi dds ddt de- dea dec ded dee deg dei des det dga dgc dgd dge dgg dgi dgs dgt di- dia dic did die dig dii dis dit dsa dsc dsd dse dsg dsi dss dst dta dtc dtd dte dtg dti dts dtt eaa eac ead eae eag eai eas eat ec- eca ecc ecd ece ecg eci ecs ect ed- eda edc edd ede edg edi eds edt eea eec eed eee eeg ees eet ega egc egd ege egg egi egs egt eia eic eid eie eig eii eis eit es- esa esc esd ese esg esi ess est eta etc etd ete etg eti ets ett g-d gaa gac gad gae gag gai gas gat gca gcc gcd gce gcg gci gcs gct gda gdc gdd gde gdi gds gdt ge- gea gec ged gee geg gei ges get gga ggc ggd ggg ggi ggs ggt gia gic gid gie gig gii gis git gsa gsc gsd gse gsg gsi gss gst gta gtc gtd gte gtg gti gts gtt i-d ia- iaa iac iad iae iag iai ias iat ica icc icd ice icg ici ics ict ida idc idd ide idg idi ids idt ie- iea iec ied iee ieg iei ies iet iga igc igd ige igg igi igs igt iia iic iid iie iii iis iit is- isa isc isd ise isg isi iss ist ita itc itd ite itg iti its itt saa sac sad sae sag sai sas sat sca scc scd sce scg sci scs sct sda sdc sdd sde sdg sdi sds sdt se- sea sec sed see seg sei ses set sga sgc sgd sge sgg sgi sgs sgt sia sic sid sie sig sii sis sit ss- ssa ssc ssd sse ssg ssi sss sst sta stc std ste stg sti sts stt taa tac tad tae tag tai tas tat tca tcc tcd tce tcg tci tcs tct tda tdc tdd tde tdg tdi tds tdt te- tea tec ted tee teg tei tes tet tga tgc tge tgg tgi tgs tgt tia tic tid tie tig tii tis tit tsa tsc tsd tse tsg tsi tss tst tta ttc ttd tte ttg tti tts ttt