#include<iostream>
#include<vector>
#include<string>
using namespace std;
int n,l,ans;
vector<int>a;
void D(int x,int w,string s){
	l++;
	if(l>=s.size())return;
	if(s[l]=='p'){
		w/=4;
		D(x,w,s);D(x+w,w,s);
		D(x+w*2,w,s);D(x+w*3,w,s);
	}
	else if(s[l]=='f')for(int k=0;k<w;k++)a[x+k]=1;
}
int main(){
	string s,ss;cin>>n;
	while(cin>>s>>ss){
		ans=0;
		a.clear();a.resize(1024);
		l=-1;D(0,1024,s);
		l=-1;D(0,1024,ss);
		for(auto&k:a)ans+=k;
		printf("There are %d black pixels.\n",ans);
	}
}