a-a a-c aaa aac aak aar aas aav ac- aca acc ack acr acs acv aka akc akk akr aks akv ar- ara arc ark arr ars arv as- asa asc ask asr ass asv av- ava avc avk avr avs c-- caa cac cak car cas cav cca ccc cck ccr ccs ccv cka ckc cks cra crc crk crr crs crv csa csc csk csr css csv cva cvc cvk cvr cvs cvv ka- kaa kac kak kar kas kav kca kcc kck kcr kcs kkc kkk kkr kks kkv kra krc krk krr krs krv ksa ksc ksk ksr kss ksv kva kvk kvr kvs kvv ra- raa rac rak rar ras rav rca rcc rcr rcs rcv rkc rkk rks rkv rra rrc rrk rrr rrs rsa rsc rsk rsr rss rsv rva rvc rvr rvs rvv saa sac sak sar sas sav sca scc sck scr scs scv sk- ska skc skk skr sks sr- sra src srk srr srs srv ss- ssa ssc ssk ssr sss ssv sva svc svk svr svs svv v-a vaa vac vak var vas vav vca vcc vcr vcs vka vra vrc vrk vrr vrs vsa vsc vsk vsr vss vsv vva vvc vvr vvs vvv