-ic c-- ccc cce ccf cci ccs cct ce- cec cee cef cei ces cet cfc cfe cff cfi cfs cft ci- cic cie cif cii cis cit csc cse csf csi css cst ctc cte ctf cti cts ctt ec- ecc ece ecf eci ecs ect eec eee eef ees eet ef- efc efe eff efi efs eft eic eie eif eii eis eit es- esc ese esf esi ess est etc ete etf eti ets ett fcc fce fcf fci fcs fct fec fee fef fei fes fet ffc ffe fff ffi ffs fft fic fie fif fii fis fit fsc fse fsf fsi fss fst ftc fte ftf fti fts ftt i-f icc ice icf ici ics ict ie- iec iee ief iei ies iet ifc ife iff ifi ifs ift iic iie iif iii iis iit is- isc ise isf isi iss ist itc ite itf iti its itt scc sce scf sci scs sct se- sec see sef sei ses set sfc sfe sff sfi sfs sft sic sie sif sii sis sit ss- ssc sse ssf ssi sss sst stc ste stf sti sts stt tcc tce tcf tci tcs tct te- tec tee tef tei tes tet tfc tfe tff tfi tfs tft tic tie tif tii tis tit tsc tse tsf tsi tss tst ttc tte ttf tti tts ttt