I'll be concretizing you'll be concretizing he'll be concretizing we'll be concretizing you'll be concretizing they'll be concretizing
Future perfect
I'll have concretized you'll have concretized he'll have concretized we'll have concretized you'll have concretized they'll have concretized
Future perfect continuous
I'll have been concretizing you'll have been concretizing he'll have been concretizing we'll have been concretizing you'll have been concretizing they'll have been concretizing
I'd be concretizing you'd be concretizing he'd be concretizing we'd be concretizing you'd be concretizing they'd be concretizing
Past
I'd have concretized you'd have concretized he'd have concretized we'd have concretized you'd have concretized they'd have concretized
Past continuous
I'd have been concretizing you'd have been concretizing he'd have been concretizing we'd have been concretizing you'd have been concretizing they'd have been concretizing