#include <iostream>
#include <vector>

using ull = unsigned long long;

void print_yes(){
	std::cout << "YES" << '\n';
}

void print_no(){
	std::cout << "NO" << '\n';
}

int get_digits(ull num, std::vector<int>& set){
	set.clear();
	int len = 0;

	while (num){
		int rem = num % 10;
		num /= 10;

		set[rem]++;
		len++;
	}
	return len;
}
    
bool check_con(ull a, ull b, int len_n, std::vector<int>& set){
	int len_a = 0;

	while (a){
		ull rem = a % 10;
		a /= 10;
		if (set[rem] == 0) {
			return false;
		}
		set[rem]--;
		len_a++;
	};


	int len_b = 0;

	while (b){
		ull rem = b % 10;
		b /= 10;
		if (set[rem] == 0) {
			return false;
		}

		set[rem]--;
		len_b++;
	};

	return len_a == (len_n / 2) && len_b  == (len_n / 2);
}

bool check_div(ull a, ull b){
	return (a % 10 != 0) || (b % 10 != 0);
}

bool check_eq(ull a, ull b, ull n){
	return a * b == n;
}


int main() {
	ull bats;
	std::cin >> bats;
	std::vector<int> set(10, 0);

	ull n = 0;
	ull a = 0;
	ull b = 0;
	for (ull i = 0; i < bats; i++){

		std::cin >> n >> a >> b;

		int n_len = get_digits(n, set);

		if (check_con(a, b, n_len, set) && check_div(a, b) && check_eq(a, b, n)){
			print_yes();
		}
		else {
			print_no();
		}

		for (int j = 0; j < 10; j++){
			set[j] = 0;
		}

	}

}