#include<iostream>
#include<stdio.h>
using namespace std;
FILE *f,*g;
int n,k,sol[100];
int back(int l)
{int i;
if(l==k)
{for(i=1;i<=k;i++)
    fprintf(g,"%d ",sol[i]);
    fprintf(g,"\n");
}
else
{
for(i=sol[l]+1;i<=n;i++)
    {sol[l+1]=i;
 back(l+1);
}
}
}
int main()
{
    f=fopen("combinari.in","r");
    g=fopen("combinari.out","w");
    fscanf(f,"%d%d",&n,&k);
    back(0);
}