#include <iostream>
#include <string>

using namespace std;

struct  jej
{
    string fnum;
    char opera;
    string snum;
    char equal;
    string result;
    string yesno;
    int R;
};

string K[11] = { "zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine", "ten"};
int main()
{
    int C;
    scanf("%d", &C);
    jej *S = new jej[C];

    for (int i = 0; i < C; i++)
        cin >> S[i].fnum >> S[i].opera >> S[i].snum >> S[i].equal >> S[i].result;

    for (int i = 0; i < C; i++)
    {
        if (S[i].opera == '+')
        {
            int j = 0;
            for (j = 0; j <= 11; j++)
            {
                if (S[i].fnum == K[j])
                    break;
            }
            int k = 0;
            for (k = 0; k <= 11; k++)
            {
                if (S[i].snum == K[k])
                    break;
            }
            if (j == 11 || k == 11)
            {
                return 0;
            }
            if (j + k < 11)
                S[i].R = j + k;
            else
                S[i].yesno = "No";
        }

        else if (S[i].opera == '-')
        {
            int j = 0;
            for (j = 0; j <= 11; j++)
            {
                if (S[i].fnum == K[j])
                    break;
            }
            int k = 0;
            for (k = 0; k <= 11; k++)
            {
                if (S[i].snum == K[k])
                    break;
            }
            if (j == 11 || k == 11)
            {
                return 0;
            }
            if (j - k > -1)
                S[i].R = j - k;
            else
                S[i].yesno = "No";
        }

        else if (S[i].opera == '*')
        {
            int j = 0;
            for (j = 0; j <= 11; j++)
            {
                if (S[i].fnum == K[j])
                    break;
            }
            int k = 0;
            for (k = 0; k <= 11; k++)
            {
                if (S[i].snum == K[k])
                    break;
            }
            if (j == 11 || k == 11)
            {
                return 0;
            }
            if (j * k < 11)
                S[i].R = j * k;
            else
                S[i].yesno = "No";
        }
        else
        {
            S[i].yesno = "No";
        }
    }

    for (int i = 0; i < C; i++)
    {
        if (S[i].R < 11 && S[i].R>-1)
        {
            if (K[S[i].R].size() == S[i].result.size())
            {
                for (int j = 0; j < K[S[i].R].size(); j++)
                {
                    string temp = K[S[i].R].substr(j, 1);
                    int index = S[i].result.find(temp);
                    if (index == -1)
                    {
                        S[i].yesno = "No";
                        break;
                    }
                    else
                    {
                        S[i].yesno = "Yes";
                        S[i].result.replace(index, 1, "0");
                    }
                }
            }
            else
            {
                S[i].yesno = "No";
            }
        }

    }
    for (int i = 0; i < C; i++)
        cout << S[i].yesno << endl;
    delete[] S;
    return 0;
}