-ic a-a a-c a-i a-t aaa aac aag aai aao aar aat ac- aca acc acg aci aco acr act ag- aga agc agg agi ago agr agt ai- aia aic aig aii aio air ait aoa aoc aog aoi aoo aor aot ar- ara arc arg ari aro arr art at- ata atc atg ati ato atr att c-- caa cac cag cai cao car cat cca ccc ccg cci cco ccr cct cga cgc cgg cgi cgo cgr cgt ci- cia cic cig cii cio cir cit co- coa coc cog coi coo cor cot cra crc crg cri cro crr crt cta ctc ctg cti cto ctr ctt gaa gac gag gai gao gar gat gca gcc gcg gci gco gcr gct gga ggc ggg ggi ggo ggr ggt gia gic gig gii gio gir git goa goc gog goi goo gor got gra grc grg gri gro grr grt gta gtc gtg gti gto gtr gtt ia- iaa iac iag iai iao iar iat ica icc icg ici ico icr ict iga igc igg igi igo igr igt iia iic iii iio iir iit io- ioa ioc iog ioi ioo ior iot ir- ira irc irg iri iro irr irt ita itc itg iti ito itt o-i oaa oac oag oai oao oar oat oc- oca occ ocg oci oco ocr oct oga ogc ogg ogi ogo ogt oia oic oii oio oir oit oo- ooa ooc oog ooi ooo oor oot or- ora orc org ori oro orr ort ot- ota otc otg oti oto otr ott ra- raa rac rag rai rao rar rat rca rcc rcg rci rco rcr rct rga rgc rgg rgi rgo rgr rgt ria ric rig rii rio rir rit roa roc rog roi roo ror rot rra rrc rrg rri rrr rrt rta rtc rtg rti rto rtr rtt taa tac tag tai tao tar tat tca tcc tcg tci tco tcr tct tga tgc tgg tgi tgo tgr tgt tia tic tig tii tio tir tit to- toa toc tog toi too tor tot tra trc trg tri tro trr trt tta ttc ttg tti tto ttr ttt