#include <cstdio>

using namespace std;
int a[20],n,k,sol[20];
void afisare()
{
    for(int i=1;i<=k;i++)
        printf("%d ",sol[i]);
    printf("\n");
}
void back(int z)
{
    if(z==k)
    {
        afisare();
        return;
    }
    for(int v=sol[z]+1;v<=n-(k-z)+1;v++)
    {
            sol[z+1]=v;
            back(z+1);
    }
}
int main()
{
    freopen("combinari.in","r",stdin);
    freopen("combinari.out","w",stdout);
    scanf("%d %d",&n,&k);
    back(0);
    return 0;
}