a-a a-c a-t a-z aaa aac aag aao aas aat aaz ac- aca acc acg aco acs act acz ag- aga agc agg ago ags agt agz aoa aoc aog aoo aos aot as- asa asc asg aso ass ast asz at- ata atc atg ato ats att atz az- aza azg azo azs azt azz c-- caa cac cag cao cas cat caz cca ccc ccg cco ccs cct ccz cga cgc cgg cgo cgs cgt co- coa coc cog coo cos cot coz csa csc csg cso css cst csz cta ctc ctg cto cts ctt ctz cz- czc czo czt gaa gac gag gao gas gat gaz gca gcc gcg gco gcs gct gga ggc ggg ggo ggs ggt ggz goa goc gog goo gos got goz gsa gsc gsg gso gss gst gta gtc gtg gto gts gtt gza gzo oaa oac oag oao oas oat oc- oca occ ocg oco ocs oct ocz oga ogc ogg ogo ogs ogt oo- ooa ooc oog ooo oos oot os- osa osc osg oso oss ost ot- ota otc otg oto ots ott otz oza ozo ozs ozt ozz saa sac sag sao sas sat saz sca scc scg sco scs sct sga sgc sgg sgo sgs sgt soa soc sog soo sos sot soz ss- ssa ssc ssg sso sss sst ssz sta stc stg sto sts stt stz sza taa tac tag tao tas tat taz tca tcc tcg tco tcs tct tga tgc tgg tgo tgs tgt tgz to- toa toc tog too tos tot toz tsa tsc tsg tso tss tst tta ttc ttg tto tts ttt tza tzs z-g zaa zac zag zao zas zat zaz zco zcs zgg zgs zo- zoa zoc zog zoo zos zot zsa zsg zst zsz zta zzs zzt zzz