a-a a-c a-t a-z aaa aac aag aao aar aas aat aaz ac- aca acc acg aco acr acs act acz ag- aga agc agg ago agr ags agt agz aoa aoc aog aoo aor aos aot ar- ara arc arg aro arr ars art arz as- asa asc asg aso asr ass ast asz at- ata atc atg ato atr ats att atz az- aza azg azo azs azt azz c-- caa cac cag cao car cas cat caz cca ccc ccg cco ccr ccs cct ccz cga cgc cgg cgo cgr cgs cgt co- coa coc cog coo cor cos cot coz cra crc crg cro crr crs crt crz csa csc csg cso csr css cst csz cta ctc ctg cto ctr cts ctt ctz cz- czc czo czt gaa gac gag gao gar gas gat gaz gca gcc gcg gco gcr gcs gct gga ggc ggg ggo ggr ggs ggt ggz goa goc gog goo gor gos got goz gra grc grg gro grr grs grt gsa gsc gsg gso gsr gss gst gta gtc gtg gto gtr gts gtt gza gzo gzr oaa oac oag oao oar oas oat oc- oca occ ocg oco ocr ocs oct ocz oga ogc ogg ogo ogs ogt oo- ooa ooc oog ooo oor oos oot or- ora orc org oro orr ors ort orz os- osa osc osg oso osr oss ost ot- ota otc otg oto otr ots ott otz oza ozo ozs ozt ozz ra- raa rac rag rao rar ras rat raz rca rcc rcg rco rcr rcs rct rga rgc rgg rgo rgr rgs rgt roa roc rog roo ror ros rot roz rra rrc rrg rrr rrs rrt rsa rsc rsg rso rsr rss rst rta rtc rtg rto rtr rts rtt rtz rza rzo saa sac sag sao sar sas sat saz sca scc scg sco scr scs sct sga sgc sgg sgo sgr sgs sgt soa soc sog soo sor sos sot soz sr- sra src srg sro srr srs srt ss- ssa ssc ssg sso ssr sss sst ssz sta stc stg sto str sts stt stz sza szr taa tac tag tao tar tas tat taz tca tcc tcg tco tcr tcs tct tga tgc tgg tgo tgr tgs tgt tgz to- toa toc tog too tor tos tot toz tra trc trg tro trr trs trt trz tsa tsc tsg tso tsr tss tst tta ttc ttg tto ttr tts ttt tza tzs z-g zaa zac zag zao zar zas zat zaz zco zcs zgg zgs zo- zoa zoc zog zoo zor zos zot zro zrs zsa zsg zst zsz zta ztr zzr zzs zzt zzz