I'll be ad-libing you'll be ad-libing he'll be ad-libing we'll be ad-libing you'll be ad-libing they'll be ad-libing
Future perfect
I'll have ad-libed you'll have ad-libed he'll have ad-libed we'll have ad-libed you'll have ad-libed they'll have ad-libed
Future perfect continuous
I'll have been ad-libing you'll have been ad-libing he'll have been ad-libing we'll have been ad-libing you'll have been ad-libing they'll have been ad-libing
I'd be ad-libing you'd be ad-libing he'd be ad-libing we'd be ad-libing you'd be ad-libing they'd be ad-libing
Past
I'd have ad-libed you'd have ad-libed he'd have ad-libed we'd have ad-libed you'd have ad-libed they'd have ad-libed
Past continuous
I'd have been ad-libing you'd have been ad-libing he'd have been ad-libing we'd have been ad-libing you'd have been ad-libing they'd have been ad-libing