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