c-- ccc ccf cch ccr ccs cfc cff cfh cfr cfs ch- chc chf chh chr chs crc crf crh crr crs csc csf csh csr css fcc fcf fcr fcs ffc fff ffh ffr ffs fhc fhf fhh fhr fhs frc frf frh frr frs fsc fsf fsh fsr fss hcc hcf hch hcr hcs hfc hff hfh hfr hfs hhc hhf hhh hhr hhs hr- hrc hrf hrh hrr hrs hsc hsf hsh hsr hss rcc rcf rch rcr rcs rfc rff rfh rfr rfs rh- rhc rhf rhh rhr rhs rrc rrf rrh rrr rrs rsc rsf rsh rsr rss scc scf sch scr scs sfc sff sfh sfr sfs sh- shc shf shh shr shs sr- src srf srh srr srs ss- ssc ssf ssh ssr sss