-ic c-- ccc cce ccf cci ccp ccs ce- cec cee cef cei cep ces cfc cfe cff cfi cfp cfs ci- cic cie cif cii cip cis cpc cpe cpf cpi cpp cps csc cse csf csi csp css ec- ecc ece ecf eci ecs eec eee eef eep ees ef- efc efe eff efi efp efs eic eie eif eii eip eis ep- epc epe epf epi epp eps es- esc ese esf esi esp ess fcc fce fcf fci fcp fcs fec fee fef fei fep fes ffc ffe fff ffi ffp ffs fic fie fif fii fip fis fpc fpe fpi fpp fps fsc fse fsf fsi fsp fss i-f icc ice icf ici icp ics ie- iec iee ief iei iep ies ifc ife iff ifi ifp ifs iic iie iif iii iip iis ipc ipe ipf ipi ipp ips is- isc ise isf isi isp iss p-p pcc pce pcf pci pcp pcs pec pee pef pei pep pes pfc pfe pff pfi pfp pfs pic pie pif pii pip pis ppc ppe ppf ppi ppp pps ps- psc pse psf psi psp pss scc sce scf sci scp scs se- sec see sef sei sep ses sfc sfe sff sfi sfp sfs sic sie sif sii sip sis spc spe spf spi spp sps ss- ssc sse ssf ssi ssp sss