#include <iostream>
#include <vector>

std::vector<int> givePrimes(int num){
	std::vector<int> pri;
	for(int i=2; i<=num; i++){
		bool isPrime = true;
		for(int j=2; j<i; j++){
			if(i%j == 0){
				isPrime = false;
				break;
			}
		}
		if(isPrime){
			pri.push_back(i);
		}
	}
	return pri;
}

int main(){
	int n = 1;
	while(!n%2 || n<3){
		std::cin >> n;
	}
	std::vector<int> primes = givePrimes(n);
	for(int i=4; i<=n; i+=2){
		std::cout << "Liczba: " << i << "\n";
		for(int z=0; z<primes.size(); z++){
			for(int x=0; x<primes.size(); x++){
				if(primes[z]+primes[x] == i){
					std::cout << "[" << primes[z] << ", " << primes[x] << "]\n";
				}
			}
		}
	}
}