#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
int A,B,C;
int Get(){
	char c;
	cin>>c;
	return c=='R'?0:(c=='B'?1:2);
}
void Solve(){
	cin>>A>>B>>C;
	if(A>B)swap(A,B);
	if(B>C)swap(B,C);
	if(A>B)swap(A,B);
	if(A+B>=43){
		for(int i=1;i<=100;++i){
			int x=Get();
			if(x<=1){
				cout<<"PLACE "<<x+1<<endl;
			}
			else{
				cout<<"DISCARD"<<endl;
			}
		}
	}
	else{
		int cnt[3]={0,0,0};
		int zz[3]={1,2,0};
		for(int i=1;i<=100;++i){
			int x=Get();
			++cnt[x];
			if(zz[x]){
				cout<<"PLACE "<<zz[x]<<endl;
			}
			else{
				int y=cnt[(x+1)%3]<=cnt[(x+2)%3]?(x+1)%3:(x+2)%3;
				if(cnt[y]<cnt[x]){
					cout<<"EMPTY "<<zz[y]<<endl;
					swap(zz[x],zz[y]);
					cout<<"PLACE "<<zz[x]<<endl;
				}
				else{
					cout<<"DISCARD"<<endl;
				}
			}
		}
	}
}
int main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	int T;
	cin>>T;
	while(T--)Solve();
	return 0;
}