#include <cstdio>

using namespace std;

FILE *f,*g;

int sol[20],n,k;

void back(int p)
{ int i;
 {   if (p==k+1)
        for(i=1;i<=k;i++)
            fprintf(g,"%d ",sol[i]);
            fprintf(g,"\n");
       }
   {sol[p]=0;

    for(i=sol[p-1]+1;i<=n;i++)
       { sol[p]=i;
         back(p+1);
       }
    }
}
int main()
{   f=fopen("combinari.in","r");
    g=fopen("combinari.out","w");
    fscanf(f,"%d %d",&n,&k);
    back(1);
    return 0;
    }