c-- ccc ccn cco ccs ccv cn- cnc cnn cno cns cnv cny co- coc con coo cos cov coy csc csn cso css csv csy cvc cvn cvo cvs cvv cyc cyn cyo cys ncc ncn nco ncs ncv nnc nnn nno nns nnv no- noc non noo nos nov noy nsc nsn nso nss nsv nsy nvc nvn nvv nyc nyn nyo nys nyy oc- occ ocn oco ocs ocv on- onc onn ono ons ony oo- ooc oon ooo oos oov os- osc osn oso oss osv ov- ovc ovo ovs ovv oyo oys scc scn sco scs scv snc snn sno sns snv sny soc son soo sos sov soy ss- ssc ssn sso sss ssv svc svn svo svs svv svy sy- syc syn sys vcc vcn vco vcs vcy vn- vno vns vnv voc von voo vos vov voy vsc vsn vso vss vsv vvc vvo vvs vvv vyn ycc yco ycs ycv ycy ynn yns yny yoc yon yoo yos yoy ysc yso yss ysy yvo yvy yyc yys yyy