I'll be engineering you'll be engineering he'll be engineering we'll be engineering you'll be engineering they'll be engineering
Future perfect
I'll have engineered you'll have engineered he'll have engineered we'll have engineered you'll have engineered they'll have engineered
Future perfect continuous
I'll have been engineering you'll have been engineering he'll have been engineering we'll have been engineering you'll have been engineering they'll have been engineering
I'd be engineering you'd be engineering he'd be engineering we'd be engineering you'd be engineering they'd be engineering
Past
I'd have engineered you'd have engineered he'd have engineered we'd have engineered you'd have engineered they'd have engineered
Past continuous
I'd have been engineering you'd have been engineering he'd have been engineering we'd have been engineering you'd have been engineering they'd have been engineering