#include<bits/stdc++.h>
using namespace std;
char a[1500];
int main(){
	gets(a);
	for(int i=0;i<strlen(a);i++){
		if(a[i]=='r'&&a[i+1]=='u'&&a[i+2]=='l'&&a[i+3]=='e'&&a[i+4]=='r'){
			cout<<"book";
			i+=5;
		}
		cout<<a[i];
	}
}

#include<bits/stdc++.h>
using namespace std;
string s;
int main(){
	int pos=0;
	getline(cin,s);
	while(pos>-1){
		pos=s.find("ruler",0);
		if(pos>-1){
			s.replace(pos,5,"book");
		}
	}
	cout<<s;
	return 0;
}

#include<bits/stdc++.h>
using namespace std;
string a[1145],s;
int main(){
	int i=0;
	while(cin>>s){
		int pos=s.find("ruler",0);
		if(pos>-1){
			s.replace(pos,5,"book");
		}
		a[++i]=s;
	}
	cout<<a[1];
	for(int j=2;j<=i;j++){
		cout<<" "<<a[j];
	}
	return 0;
}