Orange barrels

Businessman Vasiliy, after reading the famous book decided to open a new business - to ship oranges barrels. Partners is important to know how many barrels of oranges are shipped every day.

Mobile phone only supports traslit Vasily, so he sends messages like "n bochek". For example, "3 bochki" or "1 bochka".

Write a program that selects the correct word (from "bochka", "bochek", "bochki") depending on the n.

Input

One integer n (0 ≤ n ≤ 1000).

Output

The phrase on traslite.

Examples