02br 00Yes, that is possible, but I think that only the contraction is accepted. 0-
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Scw72"haven't to"You can actually find this phrasing on the internet, often in older texts, but in modern English it's usually in posts by people like 'explodingheadboy' on sites like 'wackoworld', so you should be able to see from that bit of information that it's not really a good idea to use "haven't to".