-ic c-- ccc cci cco ccr ccs ci- cic cii cio cir cis co- coc coi coo cor cos crc cri cro crr crs csc csi cso csr css icc ici ico icr ics iic iii iio iir iis io- ioc ioi ioo ior ios ir- irc iri iro irr irs is- isc isi iso isr iss o-i oc- occ oci oco ocr ocs oic oii oio oir ois oo- ooc ooi ooo oor oos or- orc ori oro orr ors os- osc osi oso osr oss rcc rci rco rcr rcs ric rii rio rir ris roc roi roo ror ros rrc rri rrr rrs rsc rsi rso rsr rss scc sci sco scr scs sic sii sio sir sis soc soi soo sor sos sr- src sri sro srr srs ss- ssc ssi sso ssr sss