-ic c-- ccc cci ccs cct ci- cic cii cis cit csc csi css cst csy ctc cti cts ctt cty cyc cys cyt icc ici ics ict icy iic iii iis iit is- isc isi iss ist isy itc iti its itt ity iyc iys iyt iyy scc sci scs sct sic sii sis sit ss- ssc ssi sss sst stc sti sts stt sty sy- syc syi sys syt tcc tci tcs tct tic tii tis tit tiy tsc tsi tss tst tsy ttc tti tts ttt tty tyc tys tyt ycc yci ycs ycy yii yis yit ysc ysi yss yst ysy ytc yts ytt yyc yys yyt yyy