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 "\textbf{n bochek}". For example, "\textbf{3 bochki}" or "\textbf{1 bochka}". Write a program that selects the correct word (from "\textbf{bochka}", "\textbf{bochek}", "\textbf{bochki}") depending on the \textbf{n}. \InputFile One integer \textbf{n} (\textbf{0} ≤ \textbf{n} ≤ \textbf{1000}). \OutputFile The phrase on traslite.