#include<cstdio>
#define NMAX 19
using namespace std;

int s[NMAX], n, m;
FILE *fout = fopen("combinari.out","w");

void Gen_Comb(int k)
{
    if(k-1 == m)
    {
        for(int j=1; j<=m; j++)
            fprintf(fout,"%d ",s[j]);
        fprintf(fout,"\n");
    }
    else
        for(int i=s[k-1]+1; i<=n-m+k; i++)
        {
            s[k] = i;
            Gen_Comb(k+1);
        }
}

int main()
{
    FILE *fin = fopen("combinari.in","r");
    fscanf(fin,"%d%d",&n,&m);
    fclose(fin);
    Gen_Comb(1);
    fclose(fout);
    return 0;
}