I'd be discovering you'd be discovering he'd be discovering we'd be discovering you'd be discovering they'd be discovering
Perfect
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V-ing perfect
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Negation
Simple form
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V-ing form
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Perfect
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V-ing perfect
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Interrogative form
Simple form
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V-ing form
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Perfect
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V-ing perfect
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Interro-negative form
Simple form
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V-ing form
wouldn't I be discovering? wouldn't you be discovering? wouldn't he be discovering? wouldn't we be discovering? wouldn't you be discovering? wouldn't they be discovering?
Perfect
wouldn't I have discovered? wouldn't you have discovered? wouldn't he have discovered? wouldn't we have discovered? wouldn't you have discovered? wouldn't they have discovered?
V-ing perfect
wouldn't I have been discovering? wouldn't you have been discovering? wouldn't he have been discovering? wouldn't we have been discovering? wouldn't you have been discovering? wouldn't they have been discovering?