#include <stdio.h>
int n, r;
int a[3];
void sort(int num);
int main() {
	
	scanf("%d %d", &n, &r);
	sort(0);
	return 0;
}
void sort(int num) {
	if(num==3){
		printf("%3d%3d%3d\n",a[0],a[1],a[2]);
		return;
	}
	else  {
		for (int i = 1; i <= n; i++) {
			
			sort(num);
			if (i == a[0] || i == a[1] || i == a[2])continue;
			a[num] = i;

			sort(num + 1);
			

		}


	}


}