c-- ccc cch ccn ccp ccs ch- chc chh chn chp chs cn- cnc cnh cnn cnp cns cpc cph cpn cpp cps csc csh csn csp css hcc hch hcn hcp hcs hhc hhh hhn hhp hhs hnc hnh hnn hns hpc hph hpn hpp hps hsc hsh hsn hsp hss ncc nch ncn ncp ncs nhc nhh nhn nhp nhs nnc nnh nnn nnp nns npc nph npn npp nps nsc nsh nsn nsp nss p-p pcc pch pcn pcp pcs phc phn php phs pn- pnc pnh pnn pnp pns ppc pph ppn ppp pps ps- psc psh psn psp pss scc sch scn scp scs sh- shc shh shn shp shs snc snn snp sns spc sph spn spp sps ss- ssc ssh ssn ssp sss