#include <iostream>
#include <cmath>
using namespace std;

bool a(int b) {
    if (b < 2) return false;
    for (int c = 2; c <= sqrt(b); ++c) {
        if (b % c == 0) return false;
    }
    return true;
}

int main() {
    for (int d = 2; d <= 100; ++d) {
        if (a(d)) {
            for (int e = d + 2; e <= 100; e += 2) {
                if (a(e) && a((d + e) / 2)) {
                    cout << d << " " << (d + e) / 2 << " " << e << endl;
                }
            }
        }
    }
    return 0;
}
/**************************************************************
	Problem: 1144
	User: wuzhijing
	Language: C++
	Result: Accepted
	Time:5 ms
	Memory:2072 kb
****************************************************************/