a-a a-c aaa aac aan aao aas aav ac- aca acc acn aco acs acv an- ana anc ann ano ans anv aoa aoc aon aoo aos aov as- asa asc asn aso ass asv av- ava avc avn avo avs c-- caa cac can cao cas cav cca ccc ccn cco ccs ccv cn- cna cnc cnn cno cns cnv co- coa coc con coo cos cov csa csc csn cso css csv cva cvc cvn cvo cvs cvv naa nac nan nao nas nav nca ncc ncn nco ncs ncv nna nnc nnn nno nns nnv no- noa noc non noo nos nov nsa nsc nsn nso nss nsv nva nvc nvn nvv oaa oac oan oao oas oav oc- oca occ ocn oco ocs ocv on- ona onc onn ono ons oo- ooa ooc oon ooo oos oov os- osa osc osn oso oss osv ov- ova ovc ovo ovs ovv saa sac san sao sas sav sca scc scn sco scs scv sna snc snn sno sns snv soa soc son soo sos sov ss- ssa ssc ssn sso sss ssv sva svc svn svo svs svv v-a vaa vac van vao vas vav vca vcc vcn vco vcs vn- vna vno vns vnv voa voc von voo vos vov vsa vsc vsn vso vss vsv vva vvc vvo vvs vvv