-ic a-a a-c a-i a-t aaa aac aag aai aar aas aat aay ac- aca acc acg aci acr acs act acy ag- aga agc agg agi agr ags agt agy ai- aia aic aig aii air ais ait aiy ar- ara arc arg ari arr ars art ary as- asa asc asg asi asr ass ast asy at- ata atc atg ati atr ats att ay- aya ayc ayi ayr ays ayt c-- caa cac cag cai car cas cat cay cca ccc ccg cci ccr ccs cct cga cgc cgg cgi cgr cgs cgt cgy ci- cia cic cig cii cir cis cit cra crc crg cri crr crs crt cry csa csc csg csi csr css cst csy cta ctc ctg cti ctr cts ctt cty cya cyc cyg cyr cys cyt gaa gac gag gai gar gas gat gay gca gcc gcg gci gcr gcs gct gga ggc ggg ggi ggr ggs ggt gia gic gig gii gir gis git giy gra grc grg gri grr grs grt gry gsa gsc gsg gsi gsr gss gst gta gtc gtg gti gtr gts gtt gty gy- gya gyr gys ia- iaa iac iag iai iar ias iat ica icc icg ici icr ics ict icy iga igc igg igi igr igs igt igy iia iic iii iir iis iit ir- ira irc irg iri irr irs irt iry is- isa isc isg isi isr iss ist isy ita itc itg iti its itt ity iya iyc iyr iys iyt iyy ra- raa rac rag rai rar ras rat ray rca rcc rcg rci rcr rcs rct rga rgc rgg rgi rgr rgs rgt ria ric rig rii rir ris rit riy rra rrc rrg rri rrr rrs rrt rsa rsc rsg rsi rsr rss rst rta rtc rtg rti rtr rts rtt rty ry- rya ryc ryg ryr rys ryy saa sac sag sai sar sas sat say sca scc scg sci scr scs sct sga sgc sgg sgi sgr sgs sgt sia sic sig sii sir sis sit sr- sra src srg sri srr srs srt sry ss- ssa ssc ssg ssi ssr sss sst sta stc stg sti str sts stt sty sy- sya syc syg syi syr sys syt taa tac tag tai tar tas tat tay tca tcc tcg tci tcr tcs tct tga tgc tgg tgi tgr tgs tgt tgy tia tic tig tii tir tis tit tiy tra trc trg tri trr trs trt try tsa tsc tsg tsi tsr tss tst tsy tta ttc ttg tti ttr tts ttt tty tya tyc tyg tyr tys tyt yaa yac yag yai yar yas yat yay yca ycc yci ycs ycy yga ygc yig yii yir yis yit yra yrc yrg yrs yrt ysa ysc ysg ysi ysr yss yst ysy yta ytc ytr yts ytt yyc yyg yys yyt yyy