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Futuro perfecto
I'll have collaborated you'll have collaborated he'll have collaborated we'll have collaborated you'll have collaborated they'll have collaborated
Futuro perfecto contínuo
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
Passado
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Passado continuo
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