a-a a-t a-z aaa aao aar aas aat aaz aoa aoo aor aos aot ar- ara aro arr ars art arz as- asa aso asr ass ast asz at- ata ato atr ats att atz az- aza azo azs azt azz oaa oao oar oas oat oo- ooa ooo oor oos oot or- ora oro orr ors ort orz os- osa oso osr oss ost ot- ota oto otr ots ott otz oza ozo ozs ozt ozz ra- raa rao rar ras rat raz roa roo ror ros rot roz rra rrr rrs rrt rsa rso rsr rss rst rta rto rtr rts rtt rtz rza rzo saa sao sar sas sat saz soa soo sor sos sot soz sr- sra sro srr srs srt ss- ssa sso ssr sss sst ssz sta sto str sts stt stz sza szr taa tao tar tas tat taz to- toa too tor tos tot toz tra tro trr trs trt trz tsa tso tsr tss tst tta tto ttr tts ttt tza tzs zaa zao zar zas zat zaz zo- zoa zoo zor zos zot zro zrs zsa zst zsz zta ztr zzr zzs zzt zzz