#include<iostream>
#include<set>
#include<vector>
using namespace std;
int N,M;
vector<int>A,B,AB;
int main()
{
	int T;cin>>T;
	for(;T--;)
	{
		A.clear();
		B.clear();
		AB.clear();
		set<int>S;
		int N,M;cin>>N>>M;
		for(int i=0;i<N;i++)
		{
			int a;cin>>a;
			S.insert(a);
		}
		for(int i=0;i<M;i++)
		{
			int b;cin>>b;
			if(S.find(b)!=S.end())
			{
				S.erase(b);
				AB.push_back(b);
			}
			else B.push_back(b);
		}
		for(int a:S)A.push_back(a);
		if(AB.empty())
		{
			if(!A.empty()&&!B.empty())cout<<"No\n";
			else
			{
				cout<<"Yes\n";
				for(int a:A)cout<<"Red "<<a<<"\n";
				for(int b:B)cout<<"Blue "<<b<<"\n";
			}
		}
		else
		{
			cout<<"Yes\n";
			for(int a:A)cout<<"Red "<<a<<"\n";
			cout<<"Red "<<AB.back()<<"\n";
			cout<<"Blue "<<AB.back()<<"\n";
			for(int b:B)cout<<"Blue "<<b<<"\n";
			AB.pop_back();
			for(int i=0;i<AB.size();i++)
			{
				if(i%2==0)
				{
					cout<<"Blue "<<AB[i]<<"\n";
					cout<<"Red "<<AB[i]<<"\n";
				}
				else
				{
					cout<<"Red "<<AB[i]<<"\n";
					cout<<"Blue "<<AB[i]<<"\n";
				}
			}
		}
	}
}