-ic c-- ccc cce ccf cci ccs ce- cec cee cef cei ces cfc cfe cff cfi cfs ci- cic cie cif cii cis csc cse csf csi css ec- ecc ece ecf eci ecs eec eee eef ees ef- efc efe eff efi efs eic eie eif eii eis es- esc ese esf esi ess fcc fce fcf fci fcs fec fee fef fei fes ffc ffe fff ffi ffs fic fie fif fii fis fsc fse fsf fsi fss i-f icc ice icf ici ics ie- iec iee ief iei ies ifc ife iff ifi ifs iic iie iif iii iis is- isc ise isf isi iss scc sce scf sci scs se- sec see sef sei ses sfc sfe sff sfi sfs sic sie sif sii sis ss- ssc sse ssf ssi sss