#include<stdio.h>
FILE *in,*out;
int n,k,s[20];
void back(int);

int main()
{
    in=fopen("combinari.in","rt");
    out=fopen("combinari.out","wt");
    fscanf(in,"%d %d",&n,&k);
    back(0);
}

void back(int l)
{
    int i;
    if(l==k)
    {
        for(i=1;i<=k;i++)
            fprintf(out,"%d ",s[i]);
        fprintf(out,"\n");
    }
    else
    {
        for(i=s[l]+1;i<=n;i++)
        {
            s[l+1]=i;
            back(l+1);
        }
    }
}