I'd been centering you'd been centering she'd been centering we'd been centering you'd been centering they'd been centering
Future
I'll center you'll center she'll center we'll center you'll center they'll center
Future continuous
I'll be centering you'll be centering she'll be centering we'll be centering you'll be centering they'll be centering
Future perfect
I'll have centered you'll have centered she'll have centered we'll have centered you'll have centered they'll have centered
Future perfect continuous
I'll have been centering you'll have been centering she'll have been centering we'll have been centering you'll have been centering they'll have been centering
Conditional
Present
I'd center you'd center she'd center we'd center you'd center they'd center
Present continuous
I'd be centering you'd be centering she'd be centering we'd be centering you'd be centering they'd be centering
Past
I'd have centered you'd have centered she'd have centered we'd have centered you'd have centered they'd have centered
Past continuous
I'd have been centering you'd have been centering she'd have been centering we'd have been centering you'd have been centering they'd have been centering