def letterFrequency():
 
    newString = raw_input( "Type the string here: " )
 
    #Convert to lowercase
    mod_string = newString.lower()
 
    #Initialize lists to store the new data in
    data = []
    new_data = []
    count = 0
 
    #Check only for characters in the given string
    for s in 'abcdefghijklmnopqrstuvwxyz':
        count = 0
        for char in mod_string:        
            if s == char:
                count += 1
 
        data = [ s, count ]
        new_data += [ data ]    
 
    return new_data
 
print letterFrequency()