#include<stdio.h>

int n,m,st[21];

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