#include <stdio.h>
FILE *f=fopen("submultimi.in","r");
FILE *g=fopen("submultimi.out","w");
int n,k,i,j,a[17];
void tipar(int k) {
	int i;
	for(i=1;i<=k;i++)
		fprintf(g,"%d ",a[i]);
	fprintf(g,"\n");}
void back(int k) {
	int i,j;
	for(i=a[k-1]+1;i<=n;i++) {
		a[k]=i;
		tipar(k);
		if(k<n)
			back(k+1);
	}
		
}
int main() {
	fscanf(f,"%d",&n);
	back(1);
	return 0;
}