#include <cstdio>

using namespace std;

const int NMAX=32;
int n,m,v[NMAX];

inline void comb(int k){
    int i;
    if (k==m+1){
        for (i=1; i<=m; ++i)
        	printf("%d ",v[i]);
        printf("\n");
    }
    else{
        for (i=v[k-1]+1; i<=n-m+k; ++i){
        	v[k]=i;
        	comb(k+1);
        }
    }
}

int main()
{
    freopen("combinari.in","r",stdin);
    freopen("combinari.out","w",stdout);

    scanf("%d%d",&n,&m);
    comb(1);

    return 0;
}