#include<bits/stdc++.h>

using namespace std;

#define endl "\n"

void solve(){
    int n,m;cin>>n>>m;
    vector<vector<int>> grid(n,vector<int>(m));
    // vector<pair<int,int>> vp;
    // for(int j = 0;j<m;j++) vp.push_back({0,j});
    // for(int i = 1;i<n;i++) vp.push_back({i,m-1});
    // int pt = 1;
    // for(auto [x,y]:vp){
    //     while(x >= 0 && x < n && y>=0&&y<)
    // }
    cout<<"YES"<<endl;
    if(m%2==0){
        for(int i = 0;i<n;i++){
            for(int j =0;j<m;j++){
                cout<<i * m + j + 1<<" ";
            }
            cout<<endl;
        }
        return;
    }
    for(int j = 0;j<m;j++)
        grid[0][j] = j;
    int st = m-1;
    int val = m;
    for(int i = 1;i<n;i++){
        for(int j =0;j<m;j++){
            grid[i][(st + j)%m] = val++;
        }
        st = (st - 1 + m )%m;
    }
    for(int i =0;i<n;i++){
        for(int j =0;j<m;j++){
            cout<<grid[i][j]+1<<" ";
        }
        cout<<endl;
    }
}

int main(){
    cin.tie(0);cout.tie(0);
    ios::sync_with_stdio(0);
    int t;cin>>t;while(t--)
    solve();
}