#include<stdio.h>

void main(){
	int i,n;
	scanf("%d",&n);
	
	i=1;
	while(i<=n){
		if(i%2==0&&i%3!=0){
			printf("%d\n",i);
		}
		i++;
	}
	
} 


/**************************************************************
	Problem: 1699
	User: admin
	Language: C
	Result: Accepted
	Time:9 ms
	Memory:1144 kb
****************************************************************/