#include <cstdio>
#include <algorithm>

using namespace std;

const int N = 1e3 + 50;

int A[N][N], n, m;

bool check() {
	vector < int > S;
	for(int i = 0;i < n;i++) {
		for(int j = 0;j < m;j++) {
			if(i + 1 < n) S.push_back(A[i][j] + A[i + 1][j]);
			if(j + 1 < m) S.push_back(A[i][j] + A[i][j + 1]);
		}
	}
	sort(S.begin(), S.end());
	for(int i = 0;i + 1 < (int)S.size();i++)
		if(S[i] == S[i + 1]) return false;
	return true;
}

int main() {
	int T; scanf("%d", &T);
	for(;T--;) {
		scanf("%d%d", &n, &m);
		int cnt = 1;
		for(int dig = 0;dig <= (n + m) - 2;dig++) {
			for(int i = 0;i < n;i++) {
				if(dig - i >= 0 && dig - i < m) {
					A[i][dig - i] = cnt++;
				}
			}
		}
		printf("YES\n");
		for(int i = 0;i < n;i++) {
			for(int j = 0;j < m;j++) {
				printf("%d ", A[i][j]);
			}
			printf("\n");
		}
	}
}

answer.code: In function ‘bool check()’:
answer.code:11:9: error: ‘vector’ was not declared in this scope
   11 |         vector < int > S;
      |         ^~~~~~
answer.code:3:1: note: ‘std::vector’ is defined in header ‘<vector>’; did you forget to ‘#include <vector>’?
    2 | #include <algorithm>
  +++ |+#include <vector>
    3 | 
answer.code:11:18: error: expected primary-expression before ‘int’
   11 |         vector < int > S;
      |                  ^~~
answer.code:14:39: error: ‘S’ was not declared in this scope
   14 |                         if(i + 1 < n) S.push_back(A[i][j] + A[i + 1][j]);
      |                                       ^
answer.code:15:39: error: ‘S’ was not declared in this scope
   15 |                         if(j + 1 < m) S.push_back(A[i][j] + A[i][j + 1]);
      |                                       ^
answer.code:18:14: error: ‘S’ was not declared in this scope
   18 |         sort(S.begin(), S.end());
      |              ^
answer.code: In function ‘int main()’:
answer.code:25:21: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   25 |         int T; scanf("%d", &T);
      |                ~~~~~^~~~~~~~~~
answer.code:27:22: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   27 |                 scanf("%d%d", &n, &m);
      |                 ~~~~~^~~~~~~~~~~~~~~~