I'll be imagining you'll be imagining he'll be imagining we'll be imagining you'll be imagining they'll be imagining
Future perfect
I'll have imagined you'll have imagined he'll have imagined we'll have imagined you'll have imagined they'll have imagined
Future perfect continuous
I'll have been imagining you'll have been imagining he'll have been imagining we'll have been imagining you'll have been imagining they'll have been imagining
I'd be imagining you'd be imagining he'd be imagining we'd be imagining you'd be imagining they'd be imagining
Past
I'd have imagined you'd have imagined he'd have imagined we'd have imagined you'd have imagined they'd have imagined
Past continuous
I'd have been imagining you'd have been imagining he'd have been imagining we'd have been imagining you'd have been imagining they'd have been imagining