#include<stdio.h>

int v[20],n,k;
 
FILE *f = fopen("combinari.in","r");
FILE *g = fopen("combinari.out","w");


void backtracking(int l)
{
	int i;
	if(l==k)
	{
		for(i=1;i<=k;i++)
			fprintf(g,"%d ",v[i]);
		fprintf(g,"\n");
	}
	else
	{
		for(i=v[l]+1;i<=n;i++)
		{
			v[l+1]=i;
			backtracking(l+1);
		}
	}
}


int main()
{
	fscanf(f,"%d%d",&n,&k);
	backtracking(0);
}