#include<bits/stdc++.h>
using namespace std;

int main()
{
	int t,length,i;
	int len1,len2,len3;
	cin>>t;
	while(t--)
	{
		char s[1000]={0};
		cin>>s;
		length = strlen(s);
		len1 = count(s,s+length,'R');//标记函数，寻找R在字符串中出现的次数，下面类同
		len2 = count(s,s+length,'W');
		len3 = count(s,s+length,'B');
		for(i=0;i<len1;i++)
		{
			cout<<"R";
		}
		for(i=0;i<len2;i++)
		{
			cout<<"W";
		}
		for(i=0;i<len3;i++)
		{
			cout<<"B";
		}
		cout<<endl;
	}
}