I'll be authoring you'll be authoring he'll be authoring we'll be authoring you'll be authoring they'll be authoring
Future perfect
I'll have authored you'll have authored he'll have authored we'll have authored you'll have authored they'll have authored
Future perfect continuous
I'll have been authoring you'll have been authoring he'll have been authoring we'll have been authoring you'll have been authoring they'll have been authoring
I'd be authoring you'd be authoring he'd be authoring we'd be authoring you'd be authoring they'd be authoring
Past
I'd have authored you'd have authored he'd have authored we'd have authored you'd have authored they'd have authored
Past continuous
I'd have been authoring you'd have been authoring he'd have been authoring we'd have been authoring you'd have been authoring they'd have been authoring