I'll be burrowing you'll be burrowing she'll be burrowing we'll be burrowing you'll be burrowing they'll be burrowing
Future perfect
I'll have burrowed you'll have burrowed she'll have burrowed we'll have burrowed you'll have burrowed they'll have burrowed
Future perfect continuous
I'll have been burrowing you'll have been burrowing she'll have been burrowing we'll have been burrowing you'll have been burrowing they'll have been burrowing
I'd be burrowing you'd be burrowing she'd be burrowing we'd be burrowing you'd be burrowing they'd be burrowing
Past
I'd have burrowed you'd have burrowed she'd have burrowed we'd have burrowed you'd have burrowed they'd have burrowed
Past continuous
I'd have been burrowing you'd have been burrowing she'd have been burrowing we'd have been burrowing you'd have been burrowing they'd have been burrowing