I'll be specializing you'll be specializing she'll be specializing we'll be specializing you'll be specializing they'll be specializing
Future perfect
I'll have specialized you'll have specialized she'll have specialized we'll have specialized you'll have specialized they'll have specialized
Future perfect continuous
I'll have been specializing you'll have been specializing she'll have been specializing we'll have been specializing you'll have been specializing they'll have been specializing
I'd be specializing you'd be specializing she'd be specializing we'd be specializing you'd be specializing they'd be specializing
Past
I'd have specialized you'd have specialized she'd have specialized we'd have specialized you'd have specialized they'd have specialized
Past continuous
I'd have been specializing you'd have been specializing she'd have been specializing we'd have been specializing you'd have been specializing they'd have been specializing