#include <stdio.h>
using namespace std;
FILE *f=fopen("combinari.in","r");
FILE *g=fopen("combinari.out","w");
int v[20],k,n;
void back(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;
            back(l+1);
        }
    }
}
int main()
{
    fscanf(f,"%d %d",&n,&k);
    back(0);
    return 0;
}