a-a a-c aaa aac aak aar aav ac- aca acc ack acr acv aka akc akk akr akv ar- ara arc ark arr arv av- ava avc avk avr c-- caa cac cak car cav cca ccc cck ccr ccv cka ckc cra crc crk crr crv cva cvc cvk cvr cvv ka- kaa kac kak kar kav kca kcc kck kcr kkc kkk kkr kkv kra krc krk krr krv kva kvk kvr kvv ra- raa rac rak rar rav rca rcc rcr rcv rkc rkk rkv rra rrc rrk rrr rva rvc rvr rvv v-a vaa vac vak var vav vca vcc vcr vka vra vrc vrk vrr vva vvc vvr vvv