c-- ccc ccf ccn ccp ccs cfc cff cfn cfp cfs cn- cnc cnf cnn cnp cns cny cpc cpf cpn cpp cps csc csf csn csp css csy cyc cyf cyn cyp cys fcc fcf fcn fcp fcs fcy ffc fff ffn ffp ffs ffy fnc fnf fnn fnp fns fpc fpn fpp fps fpy fsc fsf fsn fsp fss fy- fyc fyn fyp ncc ncf ncn ncp ncs nfc nff nfn nfp nfs nnc nnf nnn nnp nns npc npf npn npp nps nsc nsf nsn nsp nss nsy nyc nyf nyn nyp nys nyy p-p pcc pcf pcn pcp pcs pfc pff pfn pfp pfs pfy pn- pnc pnf pnn pnp pns pny ppc ppf ppn ppp pps ps- psc psf psn psp pss psy py- pyc pyf pyn pys scc scf scn scp scs sfc sff sfn sfp sfs snc snf snn snp sns sny spc spf spn spp sps spy ss- ssc ssf ssn ssp sss sy- syc syn syp sys ycc ycf ycp ycs ycy yfc yff yfs ynn ynp yns yny ypf yps ysc ysp yss ysy yyc yyf yys yyy