I've been corresponding you've been corresponding he's been corresponding we've been corresponding you've been corresponding they've been corresponding
I'll be corresponding you'll be corresponding he'll be corresponding we'll be corresponding you'll be corresponding they'll be corresponding
Futuro perfecto
I'll have corresponded you'll have corresponded he'll have corresponded we'll have corresponded you'll have corresponded they'll have corresponded
Futuro perfecto contínuo
I'll have been corresponding you'll have been corresponding he'll have been corresponding we'll have been corresponding you'll have been corresponding they'll have been corresponding
I'd be corresponding you'd be corresponding he'd be corresponding we'd be corresponding you'd be corresponding they'd be corresponding
Passado
I'd have corresponded you'd have corresponded he'd have corresponded we'd have corresponded you'd have corresponded they'd have corresponded
Passado continuo
I'd have been corresponding you'd have been corresponding he'd have been corresponding we'd have been corresponding you'd have been corresponding they'd have been corresponding