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

int main()
{
	char word[2][200000];
	int n;
	int i, j, k, l;
	int len[2];
	char temp;
	scanf("%d", &n);
	for ( i = 0; i < n; i++){
		scanf("%s%s", word[0], word[1]);
		for ( j = 0; j < 2; j++)
			for ( k = 0; strcmp(word[j] + k, "\0"); k++)
				if ( !isalpha(word[j][k])){
					strcpy( word[j] + k, word[j] + k + 1);
					k--;
				}
		len[0] = strlen(word[0]);
		len[1] = strlen(word[1]);
		if ( len[0] != len[1]){
			printf("no\n");
			continue;
		}
		for ( j = 0; j < len[0]; j++){
			word[0][j] = tolower(word[0][j]);
			word[1][j] = tolower(word[1][j]);
		}
		for ( j = 0; j < 2; j++)
			for (k = len[j] - 2; k >=0 ; k--)
				for ( l = 0; l <= k; l++)
					if ( word[j][l] > word[j][l + 1]){
						temp = word[j][l];
						word[j][l] = word[j][l + 1];
						word[j][l + 1] = temp;
				}
		printf("%s\n", (!strcmp(word[0], word[1])) ? "yes" : "no");
	}
	return 0;
}