#include <iostream>
#include <string>
using namespace std;

void build(string& _pre, string& _in, int pre_front, int pre_end, int in_front, int in_end){
	if (pre_front > pre_end) return;

	char root;
	root = _pre[pre_front];
	int k = _in.find(root, in_front);//´Óin_front¿ªÊ¼ 
	int leftsize = k - in_front; 
	build(_pre, _in, pre_front + 1, pre_front + leftsize, in_front, k - 1);
	build(_pre, _in, pre_front + leftsize + 1 , pre_end, k + 1, in_end);
	cout << root << " ";	
}
int main(){
	string pre, in;
	cin >> pre >> in;
	build(pre, in, 0, pre.size() - 1, 0, in.size() - 1); 
	return 0;
}