#include<stdio.h>
int n,k,a[20],m;

void back(int k, int cifra)
{
    int i;
    if(k>=m)
    {
        for(i=0;i<m;i++)
            printf("%d ",a[i]);
        printf("\n");
    }
    else
    for(i=cifra+1;i<=n;i++)
    {
        a[k]=i;
        back(k+1,i);
    }



}

int main()
{
    freopen("combinari.in","r",stdin);
    freopen("combinari.out","w",stdout);
    scanf("%d %d", &n,&m);
    back(0,0);
    return 0;
}