I don't know s

I am not sure s.

    I don't know for sure s.

    I am not positive s.

I have no idea s.

    I have no clue s.

I have got no idea s.

    I have got no clue s.

I haven't got any idea s.

    I haven't got any clue s.

I don't have any idea s.

    I don't have any clue s.

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