#include <bits/stdc++.h>
using namespace std;
int main(void){
    int t;
    cin>>t;
    while(t--){
        int h,w,x,y,nx=1,ny=1;
        cin>>h>>w>>x>>y;
        if(x==0)continue;
        else if(x==-1)return 1;
        if(nx!=x-1){
            nx=x-1;
            cout<<nx<<" "<<ny<<endl;
            cin>>x>>y;
            if(x==0)continue;
            else if(x==-1)return 1;
        }
        ny=y;
        cout<<nx<<" "<<ny<<endl;
        cin>>x>>y;
        if(x==0)continue;
        else if(x==-1)return 1;
        nx=x-1,ny=y;
        cout<<nx<<" "<<ny<<endl;
        cin>>x>>y;
        if(x==-1)return 1;
    }
    return 0;
}