Fiona has always loved poetry, and recently she discovered a fascinating poetical form. \textit{Tautograms} are a special case of alliteration, which is the occurrence of the same letter at the beginning of adjacent words. In particular, a sentence is a tautogram if all of its words start with the same letter. For instance, the following sentences are tautograms: \begin{itemize} \item Flowers Flourish from France \item Sam Simmonds speaks softly \item Peter pIckEd pePPers \item truly tautograms triumph \end{itemize} Fiona wants to dazzle her boyfriend with a romantic letter full of this kind of sentences. Please help Fiona to check if each sentence she wrote down is a tautogram or not. \InputFile Each test case is given in a single line that contains a sentence. A sentence consists of a sequence of at most \textbf{50} words separated by single spaces. A word is a sequence of at most \textbf{20} contiguous uppercase and lowercase letters from the English alphabet. A word contains at least one letter and a sentence contains at least one word. The last test case is followed by a line containing only a single character '\textbf{*}' (asterisk). \OutputFile For each test case output a single line containing an uppercase '\textbf{Y}' if the sentence is a tautogram, or an uppercase '\textbf{N}' otherwise.