#include <stdio.h>

enum {FALSE, TRUE};

void PrintFirstVowel(char *);
int IsVowel(char ch);

int main(int argc, char *argv[])
{
    while (--argc > 0)
    {
        ++argv;
        PrintFirstVowel(*argv);
    }
    printf("\n");

    return 0;
}

void PrintFirstVowel(char *str)
{
   char *cp;

   for (cp = str; *cp != '\0'; cp++)
      if (IsVowel(*cp))
      {
         printf("%c ", *cp);
         break;
      }
}


int IsVowel(char ch)
{
    if (ch == 'a' || ch == 'e' || ch == 'i' ||
         ch == 'o' || ch == 'u')
            return TRUE;
    else
            return FALSE;
}