#include<stdio.h>
int n,k,st[27];
void bkt(int l)
{
	int i;
	if(l==n){
		for(i=1;i<=n;i++)
			printf("%d ",st[i]);
		printf("\n");
	}
	else
		for(i=st[l];i<=n;i++){
			st[l+1]=i;
			bkt(l+1);
		}
}
int main()
{
	freopen("permutari.in","r",stdin);
	freopen("permutari.out","w",stdout);
	scanf("%d",&n);
	bkt(0);
	return 0;
}