#!/bin/bash
function calc_num_words  {
  echo -n "" >| tmp
  while read x
    do
     if [ ${#x} -ne 0 ]
       then
         if [ $x != " " ]
           then
             echo $x | tr " " "\n" >> tmp
         fi
     fi
    done < "$1"
    cat tmp | sort -u | wc -l
}
echo -n "" >| tmp1
for f
  do
    n=$(calc_num_words "$f")
    echo "$f $n" >> tmp1
  done
sort -n +1 -2 tmp1