a-a a-c aaa aac aak aao aap aas aav ac- aca acc ack aco acp acs acv aka akc akk ako akp aks akv aoa aoc aok aoo aop aos aov ap- apa apc apk apo app aps apv as- asa asc ask aso asp ass asv av- ava avc avk avo avp avs c-- caa cac cak cao cap cas cav cca ccc cck cco ccp ccs ccv cka ckc cko cks co- coa coc cok coo cop cos cov cpa cpc cpk cpo cpp cps cpv csa csc csk cso csp css csv cva cvc cvk cvo cvp cvs cvv ka- kaa kac kak kao kap kas kav kca kcc kck kcp kcs kkc kkk kkp kks kkv koa koc kok koo kop kos kpa kpc kpk kpo kpp kps kpv ksa ksc ksk kso ksp kss ksv kva kvk kvo kvp kvs kvv oaa oac oak oao oap oas oav oc- oca occ ock oco ocp ocs ocv oka okc okk oko okp oks oo- ooa ooc ook ooo oop oos oov op- opa opc opk opo opp ops opv os- osa osc osk oso osp oss osv ov- ova ovc ovo ovp ovs ovv p-p paa pac pak pao pap pas pav pca pcc pck pco pcp pcs pcv pka pkc pko pkp pks poa poc pok poo pop pos pov ppa ppc ppk ppo ppp pps ppv ps- psa psc psk pso psp pss psv pva pvc pvk pvo pvp pvs pvv saa sac sak sao sap sas sav sca scc sck sco scp scs scv sk- ska skc skk sko skp sks soa soc sok soo sop sos sov spa spc spk spo spp sps spv ss- ssa ssc ssk sso ssp sss ssv sva svc svk svo svp svs svv v-a vaa vac vak vao vap vas vav vca vcc vco vcp vcs vka vkp voa voc vok voo vop vos vov vpa vpc vpk vpo vpp vps vsa vsc vsk vso vsp vss vsv vva vvc vvo vvs vvv