#include <iostream>
#include <cstring>
using namespace std;
void bubble(char s1[]);
int main()
{
	int n;
	cin >> n;
	char s1[100], s2[100];
	while(n--)
	{
		cin >> s1 >> s2;
		int len1 = strlen(s1);
		int len2 = strlen(s2);
		int flag_bw = 0; //变为词标记，0否 1是 
		bubble(s1);
		bubble(s2);
		if(len1 == len2) //两单词字母数相等时才比较字母是否相等 
		{
			for(int i = 0; i < len1; ++i)
			{
					if(s1[i] == s2[i])
						flag_bw = 1;
					else
					{
						flag_bw = 0;
						break;
					}	
			}
		} 
		else
			cout << "No" << endl;
		if(flag_bw == 1)
		 	cout << "Yes" << endl;
		else
			cout << "No" << endl;
			
	}
	return 0;
} 
//字母排序按ascii
void bubble(char s[])
{
	int temp, flag = 0;  
	for(int i = 0; i < strlen(s) - 1; ++i)
	{
		for(int j = 0; j < strlen(s) - i - 1; ++ j)
		{
			if(int(s[j]) > int(s[j + 1]))
			{
				temp = s[j];
				s[j] = s[j + 1];
				s[j + 1] = temp;
				...