#include <bits/stdc++.h>
using namespace std;
using i64 = int64_t;

void solve() {
    int n, m; cin >> n >> m;
    vector<vector<int>> ans(n, vector<int>(m));
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m; j++) {
            ans[i][j] = i * m + j + 1;
        }
    }
    cout << "Yes\n";
    if (m % 2 == 0) {
        for (auto &v: ans) {
            for (auto x: v) {
                cout << x << " ";
            }
            cout << "\n";
        }
    } else {
        auto a = ans;
        for (int i = 0; i < n; i++) {
            if (i % 2) {
                cout << a[i][m-1] << " ";
                for (int j = 0; j < m - 1; j++) cout << a[i][j] << " ";
            } else {
                for (auto x: a[i]) {
                    cout << x << " ";
                }   
            }
            cout << "\n";
        }
    }
}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int t; cin >> t;
    while (t--) solve();
}