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Futur perfekt
I'll have undertaken you'll have undertaken he'll have undertaken we'll have undertaken you'll have undertaken they'll have undertaken
Futur perfekt kontinuierlich
I'll have been undertaking you'll have been undertaking he'll have been undertaking we'll have been undertaking you'll have been undertaking they'll have been undertaking
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Perfekt
I'd have undertaken you'd have undertaken he'd have undertaken we'd have undertaken you'd have undertaken they'd have undertaken
Perfekt kontinuierlich
I'd have been undertaking you'd have been undertaking he'd have been undertaking we'd have been undertaking you'd have been undertaking they'd have been undertaking