-ic a-a a-c a-i a-t aaa aac aaf aag aai aas aat ac- aca acc acf acg aci acs act af- afa afc aff afg afi afs aft ag- aga agc agf agg agi ags agt ai- aia aic aif aig aii ais ait as- asa asc asf asg asi ass ast at- ata atc atf atg ati ats att c-- caa cac caf cag cai cas cat cca ccc ccf ccg cci ccs cct cfa cfc cff cfg cfi cfs cft cga cgc cgg cgi cgs cgt ci- cia cic cif cig cii cis cit csa csc csf csg csi css cst cta ctc ctf ctg cti cts ctt faa fac faf fag fai fas fat fca fcc fcf fcg fci fcs fct ffa ffc fff ffg ffi ffs fft fga fgc fgf fgg fgi fgs fgt fia fic fif fig fii fis fit fsa fsc fsf fsg fsi fss fst fta ftc ftf ftg fti fts ftt gaa gac gaf gag gai gas gat gca gcc gcf gcg gci gcs gct gfa gfc gff gfi gfs gft gga ggc ggg ggi ggs ggt gia gic gif gig gii gis git gsa gsc gsf gsg gsi gss gst gta gtc gtf gtg gti gts gtt i-f ia- iaa iac iaf iag iai ias iat ica icc icf icg ici ics ict ifa ifc iff ifg ifi ifs ift iga igc igf igg igi igs igt iia iic iif iii iis iit is- isa isc isf isg isi iss ist ita itc itf itg iti its itt saa sac saf sag sai sas sat sca scc scf scg sci scs sct sfa sfc sff sfg sfi sfs sft sga sgc sgf sgg sgi sgs sgt sia sic sif sig sii sis sit ss- ssa ssc ssf ssg ssi sss sst sta stc stf stg sti sts stt taa tac taf tag tai tas tat tca tcc tcf tcg tci tcs tct tfa tfc tff tfg tfi tfs tft tga tgc tgf tgg tgi tgs tgt tia tic tif tig tii tis tit tsa tsc tsf tsg tsi tss tst tta ttc ttf ttg tti tts ttt