#include <stdio.h>
#include <string.h>

void Sort(char *s)
{
	int i,j;
	char c;
	for(i = 0; i < strlen(s)-1; i++)
		for(j = 1; j < strlen(s)-i; j++)
			if(s[j] < s[j-1])
			{
				c = s[j];
				s[j] = s[j-1];
				s[j-1] = c;
			}
}

int main()
{
	char s1[1000],s2[1000];
	int i,n;
	scanf("%d",&n);
	for(i = 0; i < n; i++)
	{
		scanf("%s %s",s1,s2);
		Sort(s1);
		Sort(s2);
		if(strcmp(s1,s2) == 0)
			printf("Yes\n");
		else printf("No\n");
	}

	return 0;
}