#include<iostream>
using namespace std;
int main(){
	int T;
	cin>>T;
	int n,m;

	while(T--){
		cin>>n>>m;
		int total = m*n;
		cout<<"yes"<<"\n";
		if(n%2==0){
			for(int i=0;i<n;i++){
				for(int j=0;j<m;j++){
					cout<<i*m+j+1<<" ";
				}
				cout<<"\n";
			}
		}
		else{
			for(int i=0;i<n;i++){
				for(int j=0;j<m;j++){
					if(i%2==0)
						cout<<i*n+j*2+1<<" ";
					else
						cout<<i*n+j*2+2<<" ";
				}
				cout<<"\n";
			}
		}
	}	
	return 0;
}