I've been shortchanging you've been shortchanging he's been shortchanging we've been shortchanging you've been shortchanging they've been shortchanging
I'll be shortchanging you'll be shortchanging he'll be shortchanging we'll be shortchanging you'll be shortchanging they'll be shortchanging
Future perfect
I'll have shortchanged you'll have shortchanged he'll have shortchanged we'll have shortchanged you'll have shortchanged they'll have shortchanged
Future perfect continuous
I'll have been shortchanging you'll have been shortchanging he'll have been shortchanging we'll have been shortchanging you'll have been shortchanging they'll have been shortchanging
I'd be shortchanging you'd be shortchanging he'd be shortchanging we'd be shortchanging you'd be shortchanging they'd be shortchanging
Past
I'd have shortchanged you'd have shortchanged he'd have shortchanged we'd have shortchanged you'd have shortchanged they'd have shortchanged
Past continuous
I'd have been shortchanging you'd have been shortchanging he'd have been shortchanging we'd have been shortchanging you'd have been shortchanging they'd have been shortchanging