I'll be befouling you'll be befouling he'll be befouling we'll be befouling you'll be befouling they'll be befouling
Future perfect
I'll have befouled you'll have befouled he'll have befouled we'll have befouled you'll have befouled they'll have befouled
Future perfect continuous
I'll have been befouling you'll have been befouling he'll have been befouling we'll have been befouling you'll have been befouling they'll have been befouling
I'd be befouling you'd be befouling he'd be befouling we'd be befouling you'd be befouling they'd be befouling
Past
I'd have befouled you'd have befouled he'd have befouled we'd have befouled you'd have befouled they'd have befouled
Past continuous
I'd have been befouling you'd have been befouling he'd have been befouling we'd have been befouling you'd have been befouling they'd have been befouling