I'll be combining you'll be combining he'll be combining we'll be combining you'll be combining they'll be combining
Future perfect
I'll have combined you'll have combined he'll have combined we'll have combined you'll have combined they'll have combined
Future perfect continuous
I'll have been combining you'll have been combining he'll have been combining we'll have been combining you'll have been combining they'll have been combining
I'd be combining you'd be combining he'd be combining we'd be combining you'd be combining they'd be combining
Past
I'd have combined you'd have combined he'd have combined we'd have combined you'd have combined they'd have combined
Past continuous
I'd have been combining you'd have been combining he'd have been combining we'd have been combining you'd have been combining they'd have been combining