I'll be returning you'll be returning he'll be returning we'll be returning you'll be returning they'll be returning
Future perfect
I'll have returned you'll have returned he'll have returned we'll have returned you'll have returned they'll have returned
Future perfect continuous
I'll have been returning you'll have been returning he'll have been returning we'll have been returning you'll have been returning they'll have been returning
I'd be returning you'd be returning he'd be returning we'd be returning you'd be returning they'd be returning
Past
I'd have returned you'd have returned he'd have returned we'd have returned you'd have returned they'd have returned
Past continuous
I'd have been returning you'd have been returning he'd have been returning we'd have been returning you'd have been returning they'd have been returning