c-- ccc ccn ccp ccs ccz cn- cnc cnn cnp cns cny cpc cpn cpp cps cpz csc csn csp css csy csz cyc cyn cyp cys cz- czc ncc ncn ncp ncs nnc nnn nnp nns nnz npc npn npp nps npz nsc nsn nsp nss nsy nsz nyc nyn nyp nys nyy nzp nzs nzz p-p pcc pcn pcp pcs pn- pnc pnn pnp pns pny ppc ppn ppp pps ppz ps- psc psn psp pss psy py- pyc pyn pys pzc pzp scc scn scp scs snc snn snp sns sny spc spn spp sps spy spz ss- ssc ssn ssp sss ssz sy- syc syn syp sys szp ycc ycp ycs ycy ynn ynp yns yny yps ysc ysp yss ysy ysz yyc yys yyy yyz yzy zcs znc znn znp zns zpc zpp zsz zzs zzy zzz