#pragma warning(disable:4996)

#include <iostream>
#include <string>
#include <algorithm>
#include <ctype.h>

using namespace std;

int main() {
    int equation_num;

    scanf("%d", &equation_num);


    string *a = new string[equation_num];
    string *b = new string[equation_num];
    string *c = new string[equation_num];
    char *oper = new char[equation_num];
    char *equation = new char[equation_num];

    int *result = new int[equation_num];

    string *result_s = new string[equation_num];

    string num[] = { "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten" };
    int tmp_num[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };

    for (int i = 0; i < equation_num; i++) {
        int tmp1 = 0, tmp2 = 0;
        string tmp_result = "";
        cin >> a[i] >> oper[i] >> b[i] >> equation[i] >> c[i];

        if (c[i].length() > 10) {                       //if c[i]'s length over ten letters, die
            exit(1);
        }

        for (int j = 0; j < c[i].length(); j++) {       //if c[i]'s letter is not lower case, die
            if (islower(c[i][j]) == 0) {
                exit(1);
            }
        }

        for (int j = 0; j < 11; j++) {
            if (a[i] == num[j]) { tmp1 = tmp_num[j]; }
            if (b[i] == num[j]) { tmp2 = tmp_num[j]; }
        }

        if (tmp1 > 10 || tmp1 < 0) {                    //if input a is over 10 or lower than 0, die
            exit(1);
        }
        if (tmp2 > 10 || tmp2 < 0) {                    //if input b is over 10 or lower than 0, die
            exit(1);
        }

        switch (oper[i]) {
        case '+': result[i] = tmp1 + tmp2; break;
        case '-': result[i] = tmp1 - tmp2; break;
        case '*': result[i] = tmp1 * tmp2; break;
        }

        if (result[i] > 10 || result[i] < 0) {
            result_s[i] = "NO";
            continue;
        }

        for (int j = 0; j < 11; j++) {
            if (tmp_num[j] == result[i]) {
                tmp_result = num[j];
                break;
            }
        }

        sort(c[i].begin(), c[i].end());
        sort(tmp_result.begin(), tmp_result.end());

        if (c[i] == tmp_result) {
            result_s[i] = "YES";
        }
        else {
            result_s[i] = "NO";
        }
    }

    for (int i = 0; i < equation_num; i++) {
        cout << result_s[i] << endl;
    }

    system("pause");
    return 0;
}