#include <bits/stdc++.h>

using namespace std;

int main() {
    int cnt = 0;
    for (int i = 1; i <= 4; i++)
        for (int j = 1; j <= 4; j++)
            for (int k = 1; k <= 4; k++)
                if (i != j && i != k && k != j) {
                    cnt++;
                    printf("%d%d%d\n", i, j, k);
                }
    printf("%d\n",cnt);
    return 0;
}