#include <stdio.h>
#define SIZE 256
int main()
{
    int n;
    scanf("%d", &n);
    while (n--)
    {
        int frst[SIZE] = {0}, scnd[SIZE] = {0}, i, flag = 0;
        char tmp;
        while (scanf("%c", &tmp) && tmp != '\n') frst[(int)tmp]++;
        while (scanf("%c", &tmp) && tmp != '\n') scnd[(int)tmp]++;
        for (i = 0; i < SIZE; i++)
        {
            if (frst[i] || scnd[i])
            {
                if (frst[i] && !scnd[i]) flag++;
                if (!frst[i] && scnd[i]) flag++;
                if (scnd[i] < frst[i]) flag++;
            }
        }
        printf("%d: %s\n", i, flag ? "NO" : "YES");
    }
    return 0;
}