I'll be prefacing you'll be prefacing he'll be prefacing we'll be prefacing you'll be prefacing they'll be prefacing
Future perfect
I'll have prefaced you'll have prefaced he'll have prefaced we'll have prefaced you'll have prefaced they'll have prefaced
Future perfect continuous
I'll have been prefacing you'll have been prefacing he'll have been prefacing we'll have been prefacing you'll have been prefacing they'll have been prefacing
I'd be prefacing you'd be prefacing he'd be prefacing we'd be prefacing you'd be prefacing they'd be prefacing
Past
I'd have prefaced you'd have prefaced he'd have prefaced we'd have prefaced you'd have prefaced they'd have prefaced
Past continuous
I'd have been prefacing you'd have been prefacing he'd have been prefacing we'd have been prefacing you'd have been prefacing they'd have been prefacing