import java.io.BufferedReader;
import java.io.InputStreamReader;


public class Main {
    public static void main(String[] args) throws Exception{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

        int count = Integer.parseInt(br.readLine());
        int[] num = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
        String[] strNum = {"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"};
        String[] strArr = new String[count];
        String resultStr = "";
        int first = 0;
        int second = 0;
        int result = 0;

        for(int i=0; i<count; i++)
            strArr[i] = br.readLine();

        for(int i=0; i<count; i++){
            String[] strResult = strArr[i].split(" ");

            for(int k=0; k<strNum.length; k++){
                if(strResult[0].equals(strNum[k])){
                    first = num[k];
                }

                if(strResult[2].equals(strNum[k])){
                    second = num[k];
                }
            }

            switch(strResult[1]){
                case "+" :
                    result = first + second;
                    break;
                case "*" :
                    result = first * second;
                    break;
                case "-":
                    result = first - second;
                    break;
            }

            resultStr = strNum[result];
            resultStr = sortStr(resultStr);
            strResult[4] = sortStr(strResult[4]);

            if(resultStr.equals(strResult[4]))
                System.out.println("YES");
            else
                System.out.println("NO");
        }
        br.close();
    }

    public static String sortStr(String str){
        // 삽입정렬
        char[] param = str.toCharArray();
        int i, j, min;
        int size = param.length;

        for(i=0; i<size; i++){
            min = i;
            for(j=i+1; j<size; j++){
                if(param[j]<param[min])
                    min = j;
            }

            swap(param, i, min);
        }
        return new String(param);
    }

    public static void swap(char[] array, int i, int j){
        char temp = array[i];
        array[i] = array[j];
        array[j] = temp;
    }

}