-ic c-- ccc cci cck ccp ccs ci- cic cii cik cip cis ckc cki cks cky cpc cpi cpk cpp cps csc csi csk csp css csy cyc cyk cyp cys icc ici ick icp ics icy iic iii iip iis ikc iki ikk iks ipc ipi ipp ips ipy is- isc isi isk isp iss isy iyc iys iyy kcc kci kck kcp kcs kic kii kik kip kis kkc kki kkk kkp kks kky kpc kpi kpk kpp kps ksc ksi ksk ksp kss kyc kyp kys p-p pcc pci pck pcp pcs pic pii pik pip pis pkc pki pkp pks pky ppc ppi ppk ppp pps ps- psc psi psk psp pss psy py- pyc pyk pys scc sci sck scp scs sic sii sik sip sis sk- skc ski skk skp sks sky spc spi spk spp sps spy ss- ssc ssi ssk ssp sss sy- syc syi syk syp sys ycc yci ycp ycs ycy yii yip yis yki ykk yps ysc ysi ysk ysp yss ysy yyc yys yyy