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class Solution:
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    def validIPAddress(self, queryIP: str) -> str:
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        queryIP = queryIP.replace(".", ":")
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        ct = 0
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        for i in queryIP.split(":"):
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            if i != "":
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                ct += 1
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        if ct == 4:
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            for i in queryIP.split(":"):
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                if i == "":
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                    return "Neither"
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                if i.isnumeric():
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                    if len(i) > 1:
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                        if i.count("0") == len(i) or int(i) > 255 or i[0] == "0":
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                            return "Neither"
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                else:
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                    return "Neither"
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            return "IPv4"
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        elif ct == 8:
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            a = ["a", "b", "c", "d", "e", "f", "A", "B", "C", "D", "E", "F"]
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            for i in queryIP.split(":"):
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                if i == "":
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                    return "Neither"
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                if len(i) < 5:
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                    for j in i:
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                        if j not in a and j.isdigit() == False:
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                            return "Neither"
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                else:
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                    return "Neither"
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            return "IPv6"
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        else:
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            return "Neither"