I've been demonstrating you've been demonstrating he's been demonstrating we've been demonstrating you've been demonstrating they've been demonstrating
I'll be demonstrating you'll be demonstrating he'll be demonstrating we'll be demonstrating you'll be demonstrating they'll be demonstrating
Futur perfekt
I'll have demonstrated you'll have demonstrated he'll have demonstrated we'll have demonstrated you'll have demonstrated they'll have demonstrated
Futur perfekt kontinuierlich
I'll have been demonstrating you'll have been demonstrating he'll have been demonstrating we'll have been demonstrating you'll have been demonstrating they'll have been demonstrating
I'd be demonstrating you'd be demonstrating he'd be demonstrating we'd be demonstrating you'd be demonstrating they'd be demonstrating
Perfekt
I'd have demonstrated you'd have demonstrated he'd have demonstrated we'd have demonstrated you'd have demonstrated they'd have demonstrated
Perfekt kontinuierlich
I'd have been demonstrating you'd have been demonstrating he'd have been demonstrating we'd have been demonstrating you'd have been demonstrating they'd have been demonstrating