[Grammar] how to use "consider" in a sentence

norae99 said:

Hello, teachers

Among
1) I consider her as my best friend.
2) I consider her to be my best friend.
3) I consider her my best friend.

I'd really like to know which one is grammatically correct.

And if all the sentences are correct, which one is the most frequently used?

Thank you in advance.

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1) I consider her as my best friend.
2) I consider her to be my best friend.
3) I consider her my best friend.

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bhaisahab said:

2 and 3 are both OK and commonly used. 1 is not natural English.

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