#include <iostream>

int main() {
	int n;
	std::cin >> n;
	if (n == 2 || n == 3) {
		std::cout << "NO SOLUTION" << std::endl;
	} else {
		for (int i = 2; i <= n; i += 2)
			std::cout << i << " ";
		for (int i = 1; i <= n; i += 2)
			std::cout << i << " ";
		std::cout << std::endl;
	}
}