#pragma GCC optimize("O3")
#pragma GCC optimize(2)
#pragma GCC optimize(3)
#pragma GCC optimize("Ofast")
#pragma GCC optimize("inline")
#pragma GCC optimize("-fgcse")
#pragma GCC optimize("-fgcse-lm")
#pragma GCC optimize("-fipa-sra")
#pragma GCC optimize("-ftree-pre")
#pragma GCC optimize("-ftree-vrp")
#pragma GCC optimize("-fpeephole2")
#pragma GCC optimize("-ffast-math")
#pragma GCC optimize("-fsched-spec")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("-falign-jumps")
#pragma GCC optimize("-falign-loops")	
#pragma GCC optimize("-falign-labels")
#pragma GCC optimize("-fdevirtualize")
#pragma GCC optimize("-fcaller-saves")
#pragma GCC optimize("-fcrossjumping") 
#pragma GCC optimize("-fthread-jumps")
#pragma GCC optimize("-funroll-loops")
#pragma GCC optimize("-freorder-blocks")
#pragma GCC optimize("-fschedule-insns")
#pragma GCC optimize("inline-functions")
#pragma GCC optimize("-ftree-tail-merge")
#pragma GCC optimize("-fschedule-insns2")
#pragma GCC optimize("-fstrict-aliasing")
#pragma GCC optimize("-falign-functions")
#pragma GCC optimize("-fcse-follow-jumps")
#pragma GCC optimize("-fsched-interblock")
#pragma GCC optimize("-fpartial-inlining")
#pragma GCC optimize("no-stack-protector")
#pragma GCC optimize("-freorder-functions")
#pragma GCC optimize("-findirect-inlining")
#pragma GCC optimize("-fhoist-adjacent-loads")
#pragma GCC optimize("-frerun-cse-after-loop")
#pragma GCC optimize("inline-small-functions")
#pragma GCC optimize("-finline-small-functions")
#pragma GCC optimize("-ftree-switch-conversion")
#pragma GCC optimize("-foptimize-sibling-calls")
#pragma GCC optimize("-fexpensive-optimizations")
#pragma GCC optimize("inline-functions-called-once")
#pragma GCC optimize("-fdelete-null-pointer-checks")
#pragma GCC optimize("Ofast")
//#pragma GCC target("avx,avx2,fma") 
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native") 
//#pragma GCC optimization ("unroll-loops")


#include <bits/stdc++.h>

using namespace std;

int main(void)
{
	cin.tie(0);
	ios::sync_with_stdio(false);

	int tc;

	cin >> tc;

	while(tc--)
	{
		int n,m,t;
		vector <int> A,B,C;
		set <int> SA,SB;
		cin >> n >> m;
		for(int i=0;i<n;i++)
		{
			cin >> t;
			SA.insert(t);
		}

		for(int i=0;i<m;i++)
		{
			cin >> t;
			SB.insert(t);
		}

		for(auto it : SA)
		{
			if(SB.find(it)==SB.end())
			{
				A.push_back(it);
			}
		}

		for(auto it : SB)
		{
			if(SA.find(it)==SA.end())
			{
				B.push_back(it);
			}
			else
			{
				C.push_back(it);
			}
		}

		vector <pair<string,int>> res;

		for(auto it : A)
		{
			res.push_back(make_pair("Red",it));
		}

		bool flag = true;
		int N = C.size();

		if(N%2==1)
		{
			for(auto it : C)
			{
				if(flag)
				{
					res.push_back(make_pair("Red",it));
					res.push_back(make_pair("Blue",it));
					flag = false;
				}
				else
				{
					res.push_back(make_pair("Blue",it));
					res.push_back(make_pair("Red",it));					
					flag = true;
				}
			}

			for(auto it : B)
			{
				res.push_back(make_pair("Blue",it));
			}
		}
		else
		{
			if(N==0)
			{
				if(A.size()==0)
				{
					for(auto it : B)
					{
						res.push_back(make_pair("Blue",it));
					}
				}
			}
			else
			{
				for(int j=0;j<N;j++)
				{
					auto it = C[j];
					if(j==N-2)
					{
						res.push_back(make_pair("Red",it));
						res.push_back(make_pair("Blue",it));
						for(auto it2 : B)
						{
							res.push_back(make_pair("Blue",it2));
						}
						flag = false;
					}
					else
					{
						if(flag)
						{
							res.push_back(make_pair("Red",it));
							res.push_back(make_pair("Blue",it));
							flag = false;
						}
						else
						{
							res.push_back(make_pair("Blue",it));
							res.push_back(make_pair("Red",it));					
							flag = true;
						}					
					}
				}
			}
		}

		if(res.size()==n+m)
		{
			cout << "Yes" << '\n';
			for(auto it : res)
			{
				cout << it.first << ' ' << it.second << '\n';
			}
		}
		else
		{
			cout << "No" << '\n';
		}
	}
	return 0;
}