#include <stdio.h>
int n, x, k, st[20];
void back(int k)
	{
	for (int i=st[k-1]+1;i<=n;i++)
		{
		st[k]=i;
			if (k==x)
				{
				for (register int j=1;j<=x;j++)
					printf("%d ", st[j]);
				printf("\n");
				}
			else
				back(k+1);
		}
	}

int main(void)
{
freopen ("combinari.in", "r", stdin);
freopen ("combinari.out", "w", stdout);
scanf("%d%d", &n, &x);
st[0]=0;
back(1);
return 0;
}