I'll be shadowing you'll be shadowing she'll be shadowing we'll be shadowing you'll be shadowing they'll be shadowing
Future perfect
I'll have shadowed you'll have shadowed she'll have shadowed we'll have shadowed you'll have shadowed they'll have shadowed
Future perfect continuous
I'll have been shadowing you'll have been shadowing she'll have been shadowing we'll have been shadowing you'll have been shadowing they'll have been shadowing
I'd be shadowing you'd be shadowing she'd be shadowing we'd be shadowing you'd be shadowing they'd be shadowing
Past
I'd have shadowed you'd have shadowed she'd have shadowed we'd have shadowed you'd have shadowed they'd have shadowed
Past continuous
I'd have been shadowing you'd have been shadowing she'd have been shadowing we'd have been shadowing you'd have been shadowing they'd have been shadowing