command testRangeExtract
    local numbers
    put "0, 1, 2, 4, 6, 7, 8, 11, 12, 14," \
          && "15, 16, 17, 18, 19, 20, 21, 22, 23, 24," \
          && "25, 27, 28, 29, 30, 31, 32, 33, 35, 36," \
          && "37, 38, 39" into numbers
    put rangeExtract(numbers)
end testRangeExtract