a-a a-c aaa aac aao aap aar aas aav ac- aca acc aco acp acr acs acv aoa aoc aoo aop aor aos aov ap- apa apc apo app apr aps apv ar- ara arc aro arp arr ars arv as- asa asc aso asp asr ass asv av- ava avc avo avp avr avs c-- caa cac cao cap car cas cav cca ccc cco ccp ccr ccs ccv co- coa coc coo cop cor cos cov cpa cpc cpo cpp cpr cps cpv cra crc cro crp crr crs crv csa csc cso csp csr css csv cva cvc cvo cvp cvr cvs cvv oaa oac oao oap oar oas oav oc- oca occ oco ocp ocr ocs ocv oo- ooa ooc ooo oop oor oos oov op- opa opc opo opp opr ops opv or- ora orc oro orp orr ors orv os- osa osc oso osp osr oss osv ov- ova ovc ovo ovp ovs ovv p-p paa pac pao pap par pas pav pca pcc pco pcp pcr pcs pcv poa poc poo pop por pos pov ppa ppc ppo ppp ppr pps ppv pra prc pro prp prr prs prv ps- psa psc pso psp psr pss psv pva pvc pvo pvp pvr pvs pvv ra- raa rac rao rap rar ras rav rca rcc rco rcp rcr rcs rcv roa roc roo rop ror ros rov rpa rpc rpo rpp rpr rps rpv rra rrc rrp rrr rrs rsa rsc rso rsp rsr rss rsv rva rvc rvo rvp rvr rvs rvv saa sac sao sap sar sas sav sca scc sco scp scr scs scv soa soc soo sop sor sos sov spa spc spo spp spr sps spv sr- sra src sro srp srr srs srv ss- ssa ssc sso ssp ssr sss ssv sva svc svo svp svr svs svv v-a vaa vac vao vap var vas vav vca vcc vco vcp vcr vcs voa voc voo vop vor vos vov vpa vpc vpo vpp vpr vps vra vrc vrp vrr vrs vsa vsc vso vsp vsr vss vsv vva vvc vvo vvr vvs vvv