#include <iostream>
#include <string>

using namespace std;

int main()
{
    string num[11] = {"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten"};
    string A, B, oper, equal, C = "";
    int a, b, c, sum, testc = 0;

    cin >> testc;

    while(testc--)
    {   
        cin >> A >> oper >> B >> equal >> C;

        for(int i = 0; i < 11; i++)
        {
            if(A == num[i])
                a = i;
            if(B == num[i])
                b = i;
        }

        if(oper == "+")
            sum = a + b;
        else if(oper == "-")
            sum = a - b;
        else if(oper == "*")
            sum = a * b;


        for(int i = 0; i < 11; i++)
        {
            string temp = C;
            if(num[i].size() == temp.size())
            {
                for(unsigned int j = 0; j < num[i].size(); j++)
                {
                    for(unsigned int k = 0; k < temp.size(); k++)
                    {
                        if( temp.at(k) == num[i].at(j) )
                        {
                            temp.erase(k,1);
                        }
                    }
                }
            }
            if(temp.size() == 0)
            {   
                c = i;
                break;
            }
        }

        if(sum > 10 && sum < 0)
            cout << "No" << endl;
        else
        {
            if(sum == c)
                cout << "Yes" << endl;
            else
                cout << "No" << endl;
        }
    }

    return 0;
}.