#include<bits/stdc++.h>
using ll = long long;
using i64 = long long;
void print(int x,int y,int n, int& pos, std::vector<std::vector<int>>& a) {
    a[x][y] = pos;
    a[x][y + 1] = pos;
    a[x + 1][y] = pos;
    a[x + 2][y] = pos;
    pos++;
    a[x + 1][y + 1] = pos;
    a[x + 2][y + 1] = pos;
    a[x + 3][y + 1] = pos;
    a[x + 4][y + 1] = pos;
    pos++;
    a[x + 3][y] = pos;
    a[x + 4][y] = pos;
    a[x + 5][y] = pos;
    a[x + 5][y + 1] = pos;
    pos++;
}
bool zong(int n,int m, std::vector<std::vector<int>>& a) {
    int neng = false;
    if (n % 4 == 0) {
        std::cout << "YES\n";
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < m; j++) {
                a[i][j] = (i/4)*m + j + 1;
            }
        }
        neng = true;
    }
    else {
        if (m % 2 == 0) {
            std::cout << "YES\n";
            for (int i = 0; i < n - 6; i++) {
                for (int j = 0; j < m; j++) {
                    a[i][j] = (i/4)*m + j + 1;
                }
            }
            int pos = ((n-7)/4)*m + m+1;
            if (n == 6)pos = 1;
            for (int i = 0; i < m; i += 2) {
                print(n - 6, i, n, pos, a);
            }
            neng = true;
        }
        else {
            std::cout << "NO\n";
        }
    }
    return neng;
}
void solve() {
    int n, m;
    std::cin >> n >> m;
    std::vector<std::vector<int>>a(n, std::vector<int>(m));
    bool re1 = (n % 2 == 0 && n >= 4), re2 = (m % 2 == 0 && m >= 4);
    if ( re1||re2 ) {
        if (re1) {
            if (zong(n, m, a)) {
                for (int i = 0; i < n; i++) {
                    for (int j = 0; j < m; j++) {
                        std::cout << a[i][j] << " ";
                    }
                    std::cout << "\n";
                }
            }
            
        }
        else {
            a.assign(m, std::vector<int>(n));
            if (zong(m, n, a)) {
                for (int i = 0; i < n; i++) {
                    for (int j = 0; j < m; j++) {
                        std::cout << a[j][i] << " ";
                    }
                    std::cout << "\n";
                }
            }
            
        }
    }
    else {
        std::cout << "NO\n";
    }
}
int main() {
    std::ios::sync_with_stdio(false), std::cin.tie(0), std::cout.tie(0);
    int t = 1;
    std::cin >> t;
    
    while (t--) {
        solve();
    }
    return 0;
}