use std::io::Read;

fn main() {
	let mut s = String::new();
	std::io::stdin().read_to_string(&mut s).ok();
	let t = ["watermelon", "beachball", "shrinebell"];
	t.iter().for_each(|&x| {
		if !s.contains(x) {
			println!("{}", x);
		}
	});
}