I've been philosophizing you've been philosophizing he's been philosophizing we've been philosophizing you've been philosophizing they've been philosophizing
I'd been philosophizing you'd been philosophizing he'd been philosophizing we'd been philosophizing you'd been philosophizing they'd been philosophizing
I'll be philosophizing you'll be philosophizing he'll be philosophizing we'll be philosophizing you'll be philosophizing they'll be philosophizing
Future perfect
I'll have philosophized you'll have philosophized he'll have philosophized we'll have philosophized you'll have philosophized they'll have philosophized
Future perfect continuous
I'll have been philosophizing you'll have been philosophizing he'll have been philosophizing we'll have been philosophizing you'll have been philosophizing they'll have been philosophizing
I'd be philosophizing you'd be philosophizing he'd be philosophizing we'd be philosophizing you'd be philosophizing they'd be philosophizing
Past
I'd have philosophized you'd have philosophized he'd have philosophized we'd have philosophized you'd have philosophized they'd have philosophized
Past continuous
I'd have been philosophizing you'd have been philosophizing he'd have been philosophizing we'd have been philosophizing you'd have been philosophizing they'd have been philosophizing