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