-ic c-- ccc cci ccs cct ccv ci- cic cii cis cit civ csc csi css cst csv csy ctc cti cts ctt ctv cty cvc cvi cvs cvt cvv cyc cys cyt i-v icc ici ics ict icv icy iic iii iis iit is- isc isi iss ist isv isy itc iti its itt itv ity ivc ivi ivs ivt ivv ivy iyc iys iyt iyy scc sci scs sct scv sic sii sis sit siv ss- ssc ssi sss sst ssv stc sti sts stt stv sty svc svi svs svt svv svy sy- syc syi sys syt tcc tci tcs tct tcv tic tii tis tit tiv tiy tsc tsi tss tst tsv tsy ttc tti tts ttt ttv tty tvc tvi tvs tvt tvy tyc tys tyt vcc vci vcs vct vcy vi- vic vii vis vit viv viy vsc vsi vss vst vsv vtc vti vts vtt vtv vty vvc vvi vvs vvt vvv vyt ycc yci ycs ycv ycy yii yis yit ysc ysi yss yst ysy ytc yts ytt ytv yvi yvy yyc yys yyt yyy