#12820Cool Word

A word is a string of lower-case letters. A cool word has at least 2 different letters and the number of occurrences of each different letter is different. Here is a formal definition. Let w be a word and S be the set of letters in word w, then w is cool if and only if all f (c) (for each character c in S) is all different. Here f (c) means the number of occurrences of c in w. For example, the word \ada" is cool because f (a) = 2, f (d) = 1, and they're different. \banana" is also cool because f (a) = 3, f (n) = 2, f (b) = 1. But the word \bbacccd" is not cool because f (a) = f (d) = 1. Some other interesting cool words include: mammal, needed, papaya, referee, senselessness. Read a list of words and count the number of cool words.

Input

There will be at most 30 test cases. Each case begins with an integer n (1 ≤ n ≤ 10000), the number of words to check. Each of the following n lines contains a word containing at least one and at most 30 letters.

Output

For each test case, print the case number and the number of cool words.

2
ada
bbacccd
2
illness
a

Case 1: 1
Case 2: 0