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that, whether when, if whether, that why, what
whether he will whether will he that he will that will he
never doubt always doubt seldom ask often wonder
about; it of; that about; there to; he
if; if if; that whether; whether that; if
about; it of; that about; there to; he
I doubt I don’t doubt I wonder I’m not sure
I believe I hope I think I doubt if
that; that if; if that; if if; that
whether he will whether will he that he will that will he
that, if that, that if, if if, that
if, if if, that whether, whether that, if
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