#include <cstdio>
#include <cstring>

int n, k, st[20], v[20];
char buffer[10000000];
int bufferi = 0;

#define p n

void back(int l)
{
	int f = 1;

	if(l < k)
	{
		for(int i = st[l]+1; i <= n; i++)
		{	
			if(!v[i])
			{
				st[l+1] = i;
				v[i] = 1;
				back(l+1);	
				v[i] = 0;
			}
		}
	}
	else
	{
		for(int i = 1; i <= k; i++)
		{
//			printf("%d ", st[i]);
	
			buffer[bufferi++] = st[i]+'0';
			buffer[bufferi++] = ' ';
		}
		buffer[bufferi++] = '\n';
		
	}
}

int main()
{
	freopen("combinari.in", "r", stdin);
	freopen("combinari.out", "w", stdout);

	scanf("%d%d", &n, &k);

	back(0);

	buffer[bufferi] = '\0';

	printf("%s", buffer);
	return 0;
}