Here is a rectangular with n * m integers that there are n lines and each line has m letters.
Can you help me to count how many of appeared each letters.

Input until EOF.
First line will contain two integers n and m(1 <= n, m <= 100).
Then will be a rectangular with n * m integers that there are n lines and each line has m integers.
All letters are only from 'A' to 'Z'.

Print the answer, the appeared letters and the number of times this letter appears from small to large.
Don't output the letters which has not appeared.