#include<stdio.h>


int n,m,a[20];

void back(int k)
{
	int j,i;

	if(k-1==m)
		{
			for(j=1;j<=m;j++)
				{
					printf("%d",a[j]);
					printf(" ");
				}
            printf(" \n");
		}
	else
		{
			for(i=a[k-1]+1;i<=n-m+k;i++)
			{
				a[k]=i;
                back(k+1);
            }
        }
}

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

	scanf("%d %d",&n,&m);
	back(1);
    return 0;
}