-ic a-a a-c a-i a-t aaa aac aaf aag aai aan aas aat ac- aca acc acf acg aci acn acs act af- afa afc aff afg afi afn afs aft ag- aga agc agf agg agi agn ags agt ai- aia aic aif aig aii ain ais ait an- ana anc anf ang ani ann ans ant as- asa asc asf asg asi asn ass ast at- ata atc atf atg ati atn ats att c-- caa cac caf cag cai can cas cat cca ccc ccf ccg cci ccn ccs cct cfa cfc cff cfg cfi cfn cfs cft cga cgc cgg cgi cgn cgs cgt ci- cia cic cif cig cii cin cis cit cn- cna cnc cnf cng cni cnn cns cnt csa csc csf csg csi csn css cst cta ctc ctf ctg cti ctn cts ctt faa fac faf fag fai fan fas fat fca fcc fcf fcg fci fcn fcs fct ffa ffc fff ffg ffi ffn ffs fft fga fgc fgf fgg fgi fgn fgs fgt fia fic fif fig fii fin fis fit fna fnc fnf fng fni fnn fns fnt fsa fsc fsf fsg fsi fsn fss fst fta ftc ftf ftg fti ftn fts ftt gaa gac gaf gag gai gan gas gat gca gcc gcf gcg gci gcn gcs gct gfa gfc gff gfi gfs gft gga ggc ggg ggi ggn ggs ggt gia gic gif gig gii gin gis git gna gnc gnf gni gnn gns gnt gsa gsc gsf gsg gsi gsn gss gst gta gtc gtf gtg gti gtn gts gtt i-f ia- iaa iac iaf iag iai ian ias iat ica icc icf icg ici icn ics ict ifa ifc iff ifg ifi ifn ifs ift iga igc igf igg igi ign igs igt iia iic iif iii iin iis iit in- ina inc inf ing ini inn ins int is- isa isc isf isg isi isn iss ist ita itc itf itg iti itn its itt n-i naa nac naf nag nai nan nas nat nca ncc ncf ncg nci ncn ncs nct nfa nfc nff nfi nfn nfs nft nga ngc ngf ngg ngi ngn ngs ngt nia nic nif nig nii nin nis nit nna nnc nnf nng nni nnn nns nnt nsa nsc nsf nsg nsi nsn nss nst nta ntc ntf ntg nti ntn nts ntt saa sac saf sag sai san sas sat sca scc scf scg sci scn scs sct sfa sfc sff sfg sfi sfn sfs sft sga sgc sgf sgg sgi sgn sgs sgt sia sic sif sig sii sin sis sit sna snc snf sng sni snn sns snt ss- ssa ssc ssf ssg ssi ssn sss sst sta stc stf stg sti stn sts stt taa tac taf tag tai tan tas tat tca tcc tcf tcg tci tcn tcs tct tfa tfc tff tfg tfi tfn tfs tft tga tgc tgf tgg tgi tgn tgs tgt tia tic tif tig tii tin tis tit tna tnc tnf tng tni tnn tns tnt tsa tsc tsf tsg tsi tsn tss tst tta ttc ttf ttg tti ttn tts ttt