a-a a-t a-z aaa aag aao aar aas aat aaz ag- aga agg ago agr ags agt agz aoa aog aoo aor aos aot ar- ara arg aro arr ars art arz as- asa asg aso asr ass ast asz at- ata atg ato atr ats att atz az- aza azg azo azs azt azz gaa gag gao gar gas gat gaz gga ggg ggo ggr ggs ggt ggz goa gog goo gor gos got goz gra grg gro grr grs grt gsa gsg gso gsr gss gst gta gtg gto gtr gts gtt gza gzo gzr oaa oag oao oar oas oat oga ogg ogo ogs ogt oo- ooa oog ooo oor oos oot or- ora org oro orr ors ort orz os- osa osg oso osr oss ost ot- ota otg oto otr ots ott otz oza ozo ozs ozt ozz ra- raa rag rao rar ras rat raz rga rgg rgo rgr rgs rgt roa rog roo ror ros rot roz rra rrg rrr rrs rrt rsa rsg rso rsr rss rst rta rtg rto rtr rts rtt rtz rza rzo saa sag sao sar sas sat saz sga sgg sgo sgr sgs sgt soa sog soo sor sos sot soz sr- sra srg sro srr srs srt ss- ssa ssg sso ssr sss sst ssz sta stg sto str sts stt stz sza szr taa tag tao tar tas tat taz tga tgg tgo tgr tgs tgt tgz to- toa tog too tor tos tot toz tra trg tro trr trs trt trz tsa tsg tso tsr tss tst tta ttg tto ttr tts ttt tza tzs z-g zaa zag zao zar zas zat zaz zgg zgs zo- zoa zog zoo zor zos zot zro zrs zsa zsg zst zsz zta ztr zzr zzs zzt zzz