a-a a-c a-t aaa aac aak aar aat ac- aca acc ack acr act aka akc akk akr ar- ara arc ark arr art at- ata atc atr att c-- caa cac cak car cat cca ccc cck ccr cct cka ckc ckt cra crc crk crr crt cta ctc ctk ctr ctt k-t ka- kaa kac kak kar kat kca kcc kck kcr kct kkc kkk kkr kkt kra krc krk krr krt kta ktc ktk ktr ktt ra- raa rac rak rar rat rca rcc rcr rct rkc rkk rkt rra rrc rrk rrr rrt rta rtc rtk rtr rtt taa tac tak tar tat tca tcc tck tcr tct tka tkc tkk tkr tkt tra trc trk trr trt tta ttc ttk ttr ttt