#include<iostream>
using namespace std;

int main(){
    int lines;
    int a[11],b[11],ans1[11],ans2[11];
    int in1,in2;
    bool out;

    cin>>lines;
    while(lines--){
        for(int i=0;i<11;i++){
            a[i]=0;
            b[i]=0;
            ans1[i]=0;
            ans2[i]=0;
        }

        while(true){
            cin>>in1;
            if(in1==0)break;
            cin>>in2;
            a[in2]=in1;
        }
        while(true){
            cin>>in1;
            if(in1==0)break;
            cin>>in2;
            b[in2]=in1;
        }


        for(int i=0;i<11;i++){
            ans1[i]=a[i]+b[i];
            ans2[i]=a[i]-b[i];
        }

        out=false;
        for(int i=10;i>0;i--){
            if(ans1[i]==0)continue;
            cout<<showpos<<ans1[i]<<"x"<<noshowpos<<i;
            out=true;
        }
        if(ans1[0]!=0){
            cout<<showpos<<ans1[0];
            out=true;
        }
        if(!out)cout<<noshowpos<<"0";
        cout<<endl;

        out=false;
        for(int i=10;i>0;i--){
            if(ans2[i]==0)continue;
            cout<<showpos<<ans2[i]<<"x"<<noshowpos<<i;
            out=true;
        }
        if(ans2[0]!=0){
            cout<<showpos<<ans2[0];
            out=true;
        }
        if(!out)cout<<noshowpos<<"0";
        cout<<noshowpos<<endl;
    }
    return 0;
}