This is makeindex, version 2.15 [TeX Live 2015] (kpathsea + Thai support).
Scanning input file permut.idx....done (86 entries accepted, 0 rejected).
Sorting entries....done (640 comparisons).
Generating output file permut.ind....done (128 lines written, 0 warnings).
Output written in permut.ind.
Transcript written in permut.ilg.
