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Futur perfekt
I'll have collaborated you'll have collaborated he'll have collaborated we'll have collaborated you'll have collaborated they'll have collaborated
Futur perfekt kontinuierlich
I'll have been collaborating you'll have been collaborating he'll have been collaborating we'll have been collaborating you'll have been collaborating they'll have been collaborating
I'd be collaborating you'd be collaborating he'd be collaborating we'd be collaborating you'd be collaborating they'd be collaborating
Perfekt
I'd have collaborated you'd have collaborated he'd have collaborated we'd have collaborated you'd have collaborated they'd have collaborated
Perfekt kontinuierlich
I'd have been collaborating you'd have been collaborating he'd have been collaborating we'd have been collaborating you'd have been collaborating they'd have been collaborating