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