#include <iostream>
#include <string>
#include <string.h>
#include <stdlib.h>
#include <map>

#pragma warning(disable:4996)
using namespace std;
map<string, int> mNumber;

void initNumberMap()
{
    mNumber.clear();

    mNumber.insert(pair<string, int>("zero", 0));
    mNumber.insert(pair<string, int>("one", 1));
    mNumber.insert(pair<string, int>("two", 2));
    mNumber.insert(pair<string, int>("three", 3));
    mNumber.insert(pair<string, int>("four", 4));
    mNumber.insert(pair<string, int>("five", 5));
    mNumber.insert(pair<string, int>("six", 6));
    mNumber.insert(pair<string, int>("seven", 7));
    mNumber.insert(pair<string, int>("eight", 8));
    mNumber.insert(pair<string, int>("nine", 9));
    mNumber.insert(pair<string, int>("ten", 10));
}
int operator + (const string& strDst, const string& strSrc)
{
    int nResult = mNumber[strDst] + mNumber[strSrc];
    return nResult;
}
int operator - (const string& strDst, const string& strSrc)
{
    int nResult = mNumber[strDst] - mNumber[strSrc];
    return nResult;
}
int operator * (const string& strDst, const string& strSrc)
{
    int nResult = mNumber[strDst] * mNumber[strSrc];
    return nResult;
}
string getStringformInt(int nResult)
{
    auto iter = mNumber.begin();

    while (iter != mNumber.end())
    {
        if (iter->second == nResult)
        {
            return iter->first;
        }
        iter++;
    }
    return NULL;
}
int compareString(const void* cDst, const void* cSrc)
{
    return strcmp((char*)cDst, (char*)cSrc);
}
int main()
{
    initNumberMap();
    string strInput[2] = { "", };
    string strResult[2] = { "", };
    strResult[0].resize(10);

    char cOperator[2] = {};
    int nInput = 0;
    int nResult = 0;

    cin >> nInput;

    while (nInput--)
    {
        for (int i = 0; i < 2; i++)
        {
            strInput[i].clear();
            strResult[i].clear();
        }

        cin >> strInput[0] >> cOperator[0] >> strInput[1] >> cOperator[1] >> strResult[0];


        //연산문자 예외처리
        for (int i = 0; i < 2; i++)
        {
            if (!mNumber[strInput[i]] && strInput[i] != "zero")
            {
                return 0;
            }
        }

        switch (cOperator[0])
        {
        case '+':
            nResult = strInput[0] + strInput[1];
            break;
        case '-':
            nResult = strInput[0] - strInput[1];
            break;
        case '*':
            nResult = strInput[0] * strInput[1];
            break;
        default:
            return 0;
        }

        //등호 예외처리
        if (cOperator[1] != '=')
        {
            return 0;
        }

        //길이가 10을 넘지않는 알파벳 소문자 보장
        if (strResult[0].size() > 10)
        {
            return 0;
        }
        const char* szInput = strResult[0].c_str();
        for (unsigned int i = 0; i < strResult[0].size(); i++)
        {
            if ('a' > szInput[i] || szInput[i] > 'z')
            {
                return 0;
            }
        }


        if (0 > nResult || nResult > 10)
        {
            cout << "No" << endl;
        }
        else
        {
            strResult[1] = getStringformInt(nResult);

            for (int i = 0; i < 2; i++)
            {
                qsort((char*)strResult[i].c_str(), strResult[i].size(), sizeof(char), compareString);
            }

            if (!strResult[0].compare(strResult[1]))
            {
                cout << "Yes" << endl;
            }
            else
            {
                cout << "No" << endl;
            }
        }

    }

    return 0;
}