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    For Python3 Platform

    s = input()
    
    all_lower = sorted([i for i in s if i.islower()])
    all_upper = sorted([i for i in s if i.isupper()])
    all_odd = sorted([i for i in s if i.isdigit() and int(i)%2!=0])
    all_even = sorted([i for i in s if i.isdigit() and int(i)%2==0])
    
    print("".join(all_lower+all_upper+all_odd+all_even))