C++ :

#include <iostream> 
#include <vector> 
#include <string> 


using namespace std ; 


int main() { 
int n ; 
string name ; 
vector<string> svec ; 
int i = 0 ; 


while (cin >> n) { 
for (i = 0 ; i < n ; ++ i) { 
cin >> name ; 
svec.push_back(name) ; 
} 
bool flag = false ; 
for (i = 0 ; i < n ; ++ i) { 
name = svec[i] ; 
if (name == "bowl" || name == "knife" || 
name == "fork" || name == "chopsticks") { 
if (!flag) { 
cout << name ; 
} 
else
cout << " " << name ; 
flag = true ; 
} 
}  
cout << endl ; 
svec.clear() ; 
} 


return 0 ; 
}