-ic c-- ccc cch cci cco ccr ccs ch- chc chh chi cho chr chs ci- cic cih cii cio cir cis co- coc coh coi coo cor cos crc crh cri cro crr crs csc csh csi cso csr css h-i hcc hch hci hco hcr hcs hhc hhh hhi hho hhr hhs hic hih hii hio hir his hoc hoh hoi hoo hor hos hr- hrc hrh hri hro hrr hrs hsc hsh hsi hsr hss icc ich ici ico icr ics ihc ihh ihi iho ihr ihs iic iih iii iio iir iis io- ioc ioh ioi ioo ior ios ir- irc iri iro irr irs is- isc ish isi iso isr iss o-i oc- occ och oci oco ocr ocs ohc ohh ohi oho ohr ohs oic oii oio oir ois oo- ooc ooh ooi ooo oor oos or- orc orh ori oro orr ors os- osc osh osi oso osr oss rcc rch rci rco rcr rcs rh- rhc rhh rhi rho rhr rhs ric rih rii rio rir ris roc roh roi roo ror ros rrc rrh rri rrr rrs rsc rsh rsi rso rsr rss scc sch sci sco scr scs sh- shc shh shi sho shr shs sic sih sii sio sir sis soc soh soi soo sor sos sr- src srh sri sro srr srs ss- ssc ssh ssi sso ssr sss