It is not true either.
1) It is not true either.
2) It is not true as well.
3) It is also not true.
4) It is not true too.
I am sorry for asking too many questions nowadays but I am really eager to learn English. And we know that #1 is correct and then how about the others? I think #2 and #3 are used and seen in conversations and can be correct, but #4 is wrong but I am not sure that it is being used among native English speakers. What do you experst think about those sentences?
Thank you as usual and I really appreciate your effort, time and help.
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