a-a a-t aaa aak aar aas aat aka akk akr aks ar- ara ark arr ars art as- asa ask asr ass ast at- ata atr ats att k-t ka- kaa kak kar kas kat kkk kkr kks kkt kra krk krr krs krt ksa ksk ksr kss kst kta ktk ktr kts ktt ra- raa rak rar ras rat rkk rks rkt rra rrk rrr rrs rrt rsa rsk rsr rss rst rta rtk rtr rts rtt saa sak sar sas sat sk- ska skk skr sks skt sr- sra srk srr srs srt ss- ssa ssk ssr sss sst sta stk str sts stt taa tak tar tas tat tka tkk tkr tks tkt tra trk trr trs trt tsa tsk tsr tss tst tta ttk ttr tts ttt