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Future perfect
I'll have undertaken you'll have undertaken she'll have undertaken we'll have undertaken you'll have undertaken they'll have undertaken
Future perfect continuous
I'll have been undertaking you'll have been undertaking she'll have been undertaking we'll have been undertaking you'll have been undertaking they'll have been undertaking
I'd be undertaking you'd be undertaking she'd be undertaking we'd be undertaking you'd be undertaking they'd be undertaking
Past
I'd have undertaken you'd have undertaken she'd have undertaken we'd have undertaken you'd have undertaken they'd have undertaken
Past continuous
I'd have been undertaking you'd have been undertaking she'd have been undertaking we'd have been undertaking you'd have been undertaking they'd have been undertaking