I'll be designing you'll be designing he'll be designing we'll be designing you'll be designing they'll be designing
Future perfect
I'll have designed you'll have designed he'll have designed we'll have designed you'll have designed they'll have designed
Future perfect continuous
I'll have been designing you'll have been designing he'll have been designing we'll have been designing you'll have been designing they'll have been designing
I'd be designing you'd be designing he'd be designing we'd be designing you'd be designing they'd be designing
Past
I'd have designed you'd have designed he'd have designed we'd have designed you'd have designed they'd have designed
Past continuous
I'd have been designing you'd have been designing he'd have been designing we'd have been designing you'd have been designing they'd have been designing