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

int main(void)
{
    int l, i,k, i1, i4;
    char i2,i3;
    char password[6];

    printf("Enter value for L: ");
    scanf("%d", &l);

    printf("\nEnter value for K: ");
    scanf("%d", &k);

    for(i=0; i<=k; i++)
        for(i1=0; i1<=k; i1++)
            for(i2='a'; i2<=l; i2++)
               for(i3='a'; i3<=l; i3++)
                    for(i4=0; i4<=k; i4++)
            {

                printf("%c", password[i] );
                    printf("%c", password[i1]);
                        printf("%c", password[i2]);
                            printf("%c", password[i3]);
                                printf("%c", password[i4]);

            }
    return 0;
}