English verb conjugation WOULD HAPPEN
Regular verb: happen - happened - happened
Affirmation
Simple form
--
it would happen
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V-ing form
--
it would be happening
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Perfect
--
it would have happened
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V-ing perfect
--
it would have been happening
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Negation
Simple form
--
it would not happen
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V-ing form
--
it would not be happening
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Perfect
--
it would not have happened
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V-ing perfect
--
it would not have been happening
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Interrogative form
Simple form
--
would it happen?
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V-ing form
--
would it be happening?
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Perfect
--
would it have happened?
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V-ing perfect
--
would it have been happening?
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Interro-negative form
Simple form
--
would it not happen?
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V-ing form
--
would it not be happening?
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Perfect
--
would it not have happened?
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V-ing perfect
--
would it not have been happening?
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