-ic c-- ccc cch cci ccr ccs ch- chc chh chi chr chs ci- cic cih cii cir cis crc crh cri crr crs csc csh csi csr css h-i hcc hch hci hcr hcs hhc hhh hhi hhr hhs hic hih hii hir his hr- hrc hrh hri hrr hrs hsc hsh hsi hsr hss icc ich ici icr ics ihc ihh ihi ihr ihs iic iih iii iir iis ir- irc iri irr irs is- isc ish isi isr iss rcc rch rci rcr rcs rh- rhc rhh rhi rhr rhs ric rih rii rir ris rrc rrh rri rrr rrs rsc rsh rsi rsr rss scc sch sci scr scs sh- shc shh shi shr shs sic sih sii sir sis sr- src srh sri srr srs ss- ssc ssh ssi ssr sss