#include<iostream>
#include<algorithm>

using namespace std;

int main() {
	
	int n;
	cin >> n;
	
	while (n -- ) {
		string s1, s2;
		cin >> s1 >> s2;
		sort(s1.begin(), s1.end());
		sort(s2.begin(), s2.end());
		if (s1 == s2) puts("Yes");
		else puts("No");
	}
	
	return 0;
}