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

int length;
char *set;
char *permutation;

int ft_strlen(char *s)
{
    int i = 0;
    while(s[i])
        i++;
    return (i);
}


void permutations(int index, char *used)
{
    if (index == length)
    {
        printf("%s\n", permutation);
        return ;
    }
    
    int i = 0;
    while (i < length)
    {
        if (used[i] == '0')
        {
            permutation[index] = set[i];
            used[i] = '1';
            permutations(index + 1, used);
            used[i] = '0';
        }
        i++;
    }
}

char *populate_used()
{
    char *ret = (char *) calloc (length + 1, sizeof(char));
    int i = 0;
    while (i < length)
        ret[i++] = '0';
    return (ret);
}

int main(int ac, char **av)
{
    if (ac != 2)
        return (1);
    set = av[1];
    length = ft_strlen(av[1]);
    char *used = populate_used();
    permutation = (char *) malloc(sizeof(char) * (length + 1));
    permutations(0, used);
    free(used);
    free(permutation);
    return (0);
}