-ic c-- ccc cci ccr ccs ci- cic cii cir cis crc cri crr crs cry csc csi csr css csy cyc cyr cys icc ici icr ics icy iic iii iir iis ir- irc iri irr irs iry is- isc isi isr iss isy iyc iyr iys iyy rcc rci rcr rcs ric rii rir ris riy rrc rri rrr rrs rsc rsi rsr rss ry- ryc ryr rys ryy scc sci scr scs sic sii sir sis sr- src sri srr srs sry ss- ssc ssi ssr sss sy- syc syi syr sys ycc yci ycs ycy yii yir yis yrc yrs ysc ysi ysr yss ysy yyc yys yyy