c-- ccc cch ccn ccr ccs ch- chc chh chn chr chs cn- cnc cnh cnn cnr cns crc crh crn crr crs csc csh csn csr css hcc hch hcn hcr hcs hhc hhh hhn hhr hhs hnc hnh hnn hns hr- hrc hrh hrn hrr hrs hsc hsh hsn hsr hss ncc nch ncn ncr ncs nhc nhh nhn nhr nhs nnc nnh nnn nns nrc nrn nrr nrs nsc nsh nsn nsr nss rcc rch rcn rcr rcs rh- rhc rhh rhn rhr rhs rnc rnh rnn rnr rns rrc rrh rrn rrr rrs rsc rsh rsn rsr rss scc sch scn scr scs sh- shc shh shn shr shs snc snn snr sns sr- src srh srn srr srs ss- ssc ssh ssn ssr sss