Permutari 1234

#include <iostream>
using namespace std;
int main() {
    for (int i = 1; i <= 4; i++)
        for (int j = 1; j <=4; j++)
            for (int k = 1; k <= 4; k++)
                for (int m = 1; m <=4; m++)
                    if (i != j != k != m) cout<<i<<" "<<j<<" "<<k<<" "<<m;
    return 0;
}