a-a a-c a-t aaa aac aak aar aas aat ac- aca acc ack acr acs act aka akc akk akr aks ar- ara arc ark arr ars art as- asa asc ask asr ass ast at- ata atc atr ats att c-- caa cac cak car cas cat cca ccc cck ccr ccs cct cka ckc cks ckt cra crc crk crr crs crt csa csc csk csr css cst cta ctc ctk ctr cts ctt k-t ka- kaa kac kak kar kas kat kca kcc kck kcr kcs kct kkc kkk kkr kks kkt kra krc krk krr krs krt ksa ksc ksk ksr kss kst kta ktc ktk ktr kts ktt ra- raa rac rak rar ras rat rca rcc rcr rcs rct rkc rkk rks rkt rra rrc rrk rrr rrs rrt rsa rsc rsk rsr rss rst rta rtc rtk rtr rts rtt saa sac sak sar sas sat sca scc sck scr scs sct sk- ska skc skk skr sks skt sr- sra src srk srr srs srt ss- ssa ssc ssk ssr sss sst sta stc stk str sts stt taa tac tak tar tas tat tca tcc tck tcr tcs tct tka tkc tkk tkr tks tkt tra trc trk trr trs trt tsa tsc tsk tsr tss tst tta ttc ttk ttr tts ttt