#include <iostream.h>
main ( ) {
  int type_code;
  while (cin >> type_code)
    if (type_code == 0)        cout << "eng" << endl;
    else if (type_code == 1)   cout << "box" << endl;
    else if (type_code == 2)   cout << "tnk" << endl;
    else if (type_code == 3)   cout << "cab" << endl;
}