#include <cstdio>
#define N 17

int st[N];

void submultimi(int p, int n)
{
    for (int i=st[p-1]+1; i<=n; i++)
    {
        st[p]=i;

        for (int j=1; j<=p; j++) printf("%d ",st[j]);
        printf("\n");
        submultimi(p+1,n);
    }
}

int main()
{
    int n;
	freopen("submultimi.in","r",stdin);
	freopen("submultimi.out","w",stdout);
	scanf("%d",&n);

	submultimi(1,n);

	return 0;
}