a-a a-c aaa aac aan aas aav ac- aca acc acn acs acv an- ana anc ann ans anv as- asa asc asn ass asv av- ava avc avn avs c-- caa cac can cas cav cca ccc ccn ccs ccv cn- cna cnc cnn cns cnv csa csc csn css csv cva cvc cvn cvs cvv naa nac nan nas nav nca ncc ncn ncs ncv nna nnc nnn nns nnv nsa nsc nsn nss nsv nva nvc nvn nvv saa sac san sas sav sca scc scn scs scv sna snc snn sns snv ss- ssa ssc ssn sss ssv sva svc svn svs svv v-a vaa vac van vas vav vca vcc vcn vcs vn- vna vns vnv vsa vsc vsn vss vsv vva vvc vvs vvv