a-a a-c a-t aaa aac aag aak aao aar aas aat ac- aca acc acg ack aco acr acs act ag- aga agc agg agk ago agr ags agt aka akc akg akk ako akr aks aoa aoc aog aok aoo aor aos aot ar- ara arc arg ark aro arr ars art as- asa asc asg ask aso asr ass ast at- ata atc atg ato atr ats att c-- caa cac cag cak cao car cas cat cca ccc ccg cck cco ccr ccs cct cga cgc cgg cgo cgr cgs cgt cka ckc cko cks ckt co- coa coc cog cok coo cor cos cot cra crc crg crk cro crr crs crt csa csc csg csk cso csr css cst cta ctc ctg ctk cto ctr cts ctt gaa gac gag gak gao gar gas gat gca gcc gcg gck gco gcr gcs gct gga ggc ggg ggo ggr ggs ggt gka gko gks gkt goa goc gog gok goo gor gos got gra grc grg grk gro grr grs grt gsa gsc gsg gsk gso gsr gss gst gta gtc gtg gtk gto gtr gts gtt k-t ka- kaa kac kag kak kao kar kas kat kca kcc kcg kck kcr kcs kct kga kgc kgo kgs kkc kkk kkr kks kkt koa koc kog kok koo kor kos kot kra krc krg krk kro krr krs krt ksa ksc ksg ksk kso ksr kss kst kta ktc ktg ktk kto ktr kts ktt oaa oac oag oak oao oar oas oat oc- oca occ ocg ock oco ocr ocs oct oga ogc ogg ogo ogs ogt oka okc okg okk oko okr oks oo- ooa ooc oog ook ooo oor oos oot or- ora orc org ork oro orr ors ort os- osa osc osg osk oso osr oss ost ot- ota otc otg otk oto otr ots ott ra- raa rac rag rak rao rar ras rat rca rcc rcg rco rcr rcs rct rga rgc rgg rgk rgo rgr rgs rgt rkc rkg rkk rko rks rkt roa roc rog rok roo ror ros rot rra rrc rrg rrk rrr rrs rrt rsa rsc rsg rsk rso rsr rss rst rta rtc rtg rtk rto rtr rts rtt saa sac sag sak sao sar sas sat sca scc scg sck sco scr scs sct sga sgc sgg sgk sgo sgr sgs sgt sk- ska skc skg skk sko skr sks skt soa soc sog sok soo sor sos sot sr- sra src srg srk sro srr srs srt ss- ssa ssc ssg ssk sso ssr sss sst sta stc stg stk sto str sts stt taa tac tag tak tao tar tas tat tca tcc tcg tck tco tcr tcs tct tga tgc tgg tgk tgo tgr tgs tgt tka tkc tkg tkk tko tkr tks tkt to- toa toc tog tok too tor tos tot tra trc trg trk tro trr trs trt tsa tsc tsg tsk tso tsr tss tst tta ttc ttg ttk tto ttr tts ttt