#include <iostream>
#include <string>
#include <algorithm>

using namespace std;

#define NumSize 11

bool checkInWord(string, string[]);
bool checkSortWord(string, string[], int);
bool getResultValue(int, int, string, string[]);
int getNumber(string, string[]);

int main(void)
{
    int number = 0;
    string numName[NumSize] = { "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten" };

    cin >> number;
    while (number--)
    {
        string s_fstWord, s_sndWord, s_result;
        string s_operation, s_equals;
        int i_fstWord, i_sndWord;

        cin >> s_fstWord >> s_operation >> s_sndWord >> s_equals >> s_result;

        if (!checkInWord(s_fstWord, numName))
        {
            cout << "No" << endl;
            continue;
        }
        if (!checkInWord(s_sndWord, numName))
        {
            cout << "No" << endl;
            continue;
        }
        if (checkInWord(s_result, numName))
        {
            cout << "No" << endl;
            continue;
        }

        i_fstWord = getNumber(s_fstWord, numName);
        i_sndWord = getNumber(s_sndWord, numName);

        if (!getResultValue(i_fstWord, i_sndWord, s_operation, numName)) {
            cout << "No" << endl;
            continue;
        }
        if (!checkSortWord(s_result, numName, i_fstWord + i_sndWord))
        {
            cout << "No" << endl;
            continue;
        }

        cout << "Yes" << endl;
    }

    return 0;
}

bool checkInWord(string word, string numberList[]) {
    bool flag = false;
    for (int i = 0; i < NumSize; i++)
    {
        if (word == numberList[i])
        {
            flag = true;
        }
    }
    if (!flag) {
        return flag;
    }

    return flag;
}

bool checkSortWord(string word, string numberList[], int num) {
    string comp_string = numberList[num];
    string target_string = word;
    sort(comp_string.begin(), comp_string.end());
    sort(target_string.begin(), target_string.end());

    if (comp_string == target_string) return false;

    return true;

}

bool getResultValue(int fst, int snd, string operation, string numberList[])
{
    int result = -1;

    if (operation == "+")
    {
        result = fst + snd;
        if (result > 10 || result < 0)
        {
            return false;
        }
    }
    else if (operation == "-")
    {
        result = fst - snd;
        if (result > 10 || result < 0)
        {
            return false;
        }
    }
    else if (operation == "*")
    {
        result = fst * snd;
        if (result > 10 || result < 0)
        {
            return false;
        }

    }
    return true;
}

int getNumber(string word, string numberList[]) {
    for (int i = 0; i < NumSize; i++)
    {
        if (word == numberList[i])
        {
            return i;
        }
    }
    return -1;
}