-ic c-- ccc ccg cci ccp ccs cgc cgg cgi cgp cgs cgy ci- cic cig cii cip cis cpc cpg cpi cpp cps csc csg csi csp css csy cyc cyg cyp cys g-p gcc gcg gci gcp gcs ggc ggg ggi ggp ggs gic gig gii gip gis giy gpc gpg gpi gpp gps gsc gsg gsi gsp gss gy- gyp gys icc icg ici icp ics icy igc igg igi igp igs igy iic iii iip iis ipc ipg ipi ipp ips ipy is- isc isg isi isp iss isy iyc iys iyy p-p pcc pcg pci pcp pcs pgc pgg pgi pgp pgs pgy pic pig pii pip pis ppc ppg ppi ppp pps ps- psc psg psi psp pss psy py- pyc pyg pys scc scg sci scp scs sgc sgg sgi sgp sgs sic sig sii sip sis spc spg spi spp sps spy ss- ssc ssg ssi ssp sss sy- syc syg syi syp sys ycc yci ycp ycs ycy ygc yig yii yip yis ypg yps ysc ysg ysi ysp yss ysy yyc yyg yys yyy