I've been countersigning you've been countersigning he's been countersigning we've been countersigning you've been countersigning they've been countersigning
I'd been countersigning you'd been countersigning he'd been countersigning we'd been countersigning you'd been countersigning they'd been countersigning
I'll be countersigning you'll be countersigning he'll be countersigning we'll be countersigning you'll be countersigning they'll be countersigning
Futuro anteriore
I'll have countersigned you'll have countersigned he'll have countersigned we'll have countersigned you'll have countersigned they'll have countersigned
Futuro anteriore contínuo
I'll have been countersigning you'll have been countersigning he'll have been countersigning we'll have been countersigning you'll have been countersigning they'll have been countersigning
I'd be countersigning you'd be countersigning he'd be countersigning we'd be countersigning you'd be countersigning they'd be countersigning
Passato
I'd have countersigned you'd have countersigned he'd have countersigned we'd have countersigned you'd have countersigned they'd have countersigned
Passato continuo
I'd have been countersigning you'd have been countersigning he'd have been countersigning we'd have been countersigning you'd have been countersigning they'd have been countersigning