aoc2024/d02/combine.awk

# emit a report and its variants as a bloc, separated by empty line
{
  print
  for (i=1;i<=NF;i++) {
    r = ""
    for (j=1;j<=NF;j++) {
      if (i!=j) {
        r = r $j " "
      }
    }
    print r
  }
  print ""
}