fff ffm ffn ffs ffv fmf fmm fmn fms fmv fnf fnm fnn fns fnv fsf fsm fsn fss fsv m-f m-v mff mfm mfn mfs mfv mmf mmm mmn mms mmv mnf mnm mnn mns msf msm msn mss msv mvf mvm mvn mvs mvv nff nfn nfs nfv nmm nmn nms nnf nnm nnn nns nnv nsf nsm nsn nss nsv nvm nvn nvv sff sfm sfn sfs sfv smf smm smn sms smv snf snm snn sns snv ss- ssf ssm ssn sss ssv svf svm svn svs svv vff vfm vfn vfs vfv vm- vmf vmm vmn vn- vnf vnm vns vnv vsf vsm vsn vss vsv vvm vvs vvv