#include<bits/stdc++.h>
using namespace std;
int su(int q){
	int i=2,o=1;
	for(i=2;i<q;i++){
		if(q%i==0){
			o=0;
			break;
		}
	}
	return o;
}
int main()
{
	int i,n,t;
	for(i=3;i<100;i++){
		for(t=i+1;t<100;t++){
			if(su(i)==1&&su(t)==1&&su((i+t)/2)==1){
				cout<<i<<" "<<(i+t)/2<<" "<<t<<endl;
			}
		}
	} 
return 0;

}

/**************************************************************
	Problem: 1144
	User: houshanglin
	Language: C++
	Result: Accepted
	Time:6 ms
	Memory:2072 kb
****************************************************************/