c-- ccc ccn cco ccs ccv cn- cnc cnn cno cns cnv co- coc con coo cos cov csc csn cso css csv cvc cvn cvo cvs cvv ncc ncn nco ncs ncv nnc nnn nno nns nnv no- noc non noo nos nov nsc nsn nso nss nsv nvc nvn nvv oc- occ ocn oco ocs ocv on- onc onn ono ons oo- ooc oon ooo oos oov os- osc osn oso oss osv ov- ovc ovo ovs ovv scc scn sco scs scv snc snn sno sns snv soc son soo sos sov ss- ssc ssn sso sss ssv svc svn svo svs svv vcc vcn vco vcs vn- vno vns vnv voc von voo vos vov vsc vsn vso vss vsv vvc vvo vvs vvv