a-a a-c aaa aac aap aar aav ac- aca acc acp acr acv ap- apa apc app apr apv ar- ara arc arp arr arv av- ava avc avp avr c-- caa cac cap car cav cca ccc ccp ccr ccv cpa cpc cpp cpr cpv cra crc crp crr crv cva cvc cvp cvr cvv p-p paa pac pap par pav pca pcc pcp pcr pcv ppa ppc ppp ppr ppv pra prc prp prr prv pva pvc pvp pvr pvv ra- raa rac rap rar rav rca rcc rcp rcr rcv rpa rpc rpp rpr rpv rra rrc rrp rrr rva rvc rvp rvr rvv v-a vaa vac vap var vav vca vcc vcp vcr vpa vpc vpp vpr vra vrc vrp vrr vva vvc vvr vvv