#include<bits/stdc++.h>
using namespace std;

int comp(const void *p, const void *q) {
	return (*(char *)p - *(char *)q);
}
int main() {
	int T;
	cin >> T;
	getchar();
	while(T--)  {
		char s1[100] = {};
		char s2[100] = {};
		char sold[100] = {};
		char snew[100] = {};
		gets(sold);
		gets(snew);
		int i, j;
		for (i = 0, j = 0; i < strlen(sold); i++) {
			if(sold[i] >= 'a' && sold[i] <= 'z') {
				s1[j] = sold[i];
				j++;
			}
		}
		int length1 = strlen(s1);
		for (i = 0, j = 0; i < strlen(snew); i++) {
			if(snew[i] >= 'a' && snew[i] <= 'z') {
				s2[j] = snew[i];
				j++;
			}
		}
		int length2 = strlen(s2);
		qsort(s1, length1, sizeof(char), comp);
		qsort(s2, length2, sizeof(char), comp);
		if(strcmp(s1, s2) == 0)
			cout << "Yes" << endl;
		else
			cout << "No" << endl;
	}
	return 0;
}