#include <bits/stdc++.h>
using namespace std;

int main() {
	int T; cin >> T;
	int S = 0;
	while (T--) {
		int H, W; cin >> H >> W;
		assert(3 <= H && 3 <= W);
		S += H * W;
		if (H == 3 && W == 3) {
			cout << "No\n";
			continue;
		}
		cout << "Yes\n";
		if (H % 2 == 0) {
			string A(W, '0'), B(W, '1');
			for (int i = 0; i < H; i++) {
				cout << (i % 2 == 0 ? A : B) << '\n';
			}
		} else if (W % 2 == 0) {
			string S;
			for (int j = 0; j < W; j++) {
				S.push_back(j % 2 == 0 ? '0' : '1');
			}
			for (int i = 0; i < H; i++) {
				cout << S << '\n';
			}
		} else if (H == 3) {
			if (W % 4 == 1) {
				int c = (W - 5) / 4;
				cout << "00011";
				for (int i = 0; i < c; i++) cout << "0011";
				cout << '\n';
				cout << "01100";
				for (int i = 0; i < c; i++) cout << "0110";
				cout << '\n';
				cout << "11001";
				for (int i = 0; i < c; i++) cout << "1100";
				cout << '\n';
			} else {
				int c = (W - 3) / 4;
				cout << "011";
				for (int i = 0; i < c; i++) cout << "0010";
				cout << '\n';
				cout << "110";
				for (int i = 0; i < c; i++) cout << "1100";
				cout << '\n';
				cout << "000";
				for (int i = 0; i < c; i++) cout << "1011";
				cout << '\n';
			}
		} else if (W == 3) {
			if (H % 4 == 1) {
				cout << "001\n011\n010\n100\n101\n";
				vector<string> S = {"001", "011", "110", "100"};
				for (int i = 0; i < H - 5; i++) {
					cout << S[i % 4] << '\n';
				}
			} else {
				cout << "010\n110\n100\n";
				vector<string> S = {"011", "010", "101", "001"};
				for (int i = 0; i < H - 3; i++) {
					cout << S[i % 4] << '\n';
				}
			}
		} else if (W % 4 == 1) {
			int c = (W - 5) / 4;
			string A = "11010", B = "00011", C = "11100";
			for (int i = 0; i < c; i++) {
				A += "1100"; B += "0011"; C += "1100";
			}
			cout << A << '\n';
			for (int i = 1; i < H - 1; i++) {
				cout << (i % 2 == 1 ? B : C) << '\n';
			}
			cout << A << '\n';
		} else {
			int c = (W - 7) / 4;
			string A = "1101010", B = "0001110", C = "1110001";
			for (int i = 0; i < c; i++) {
				A += "1100"; B += "0011"; C += "1100";
			}
			cout << A << '\n';
			for (int i = 1; i < H - 1; i++) {
				cout << (i % 2 == 1 ? B : C) << '\n';
			}
			cout << A << '\n';
		}
	}
	assert(S <= 1000000);
}