#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

int main(int argc, char **argv)
{
FILE *fd;
char buf[80];
char **dict_word;
int i, j, n;
  if (!argv[1] || !argv[1][0]) return;
  fd = fopen(argv[1], "r");
  i = 0;
  dict_word = NULL;
  while (fgets(buf, 30, fd)) {
     n = strlen(buf);
     if (n>0) --n;
     if (isspace(buf[n])) buf[n] = '\0';
     if (n==0) continue;
     //printf("%s\n", buf);
     dict_word = (char **)realloc(dict_word, (i+1)*sizeof(char *));
     dict_word[i] = (char *)strdup(buf);
     ++i;
  }
  fprintf(stderr, "Processed %d words\n", i);
  for (j=2; j<=15; j++)
  for (n=0; n<i; n++)
    if (strlen(dict_word[n])==j) printf("%s\n", dict_word[n]);
  fclose(fd);
}