1255 AC:
while True:
    try:
        sentence = input()
        letters = ""
        for char in sentence:
            if char.isalpha():
                letters += char
        sort_letters = sorted(letters,key = lambda x:x.lower())
        result = ""
        for c in sentence:
            if c.isalpha():
                result += sort_letters.pop(0)
            else:
                result += c
        print(result)
    except:
        break