I'll be skittering you'll be skittering he'll be skittering we'll be skittering you'll be skittering they'll be skittering
Future perfect
I'll have skittered you'll have skittered he'll have skittered we'll have skittered you'll have skittered they'll have skittered
Future perfect continuous
I'll have been skittering you'll have been skittering he'll have been skittering we'll have been skittering you'll have been skittering they'll have been skittering
I'd be skittering you'd be skittering he'd be skittering we'd be skittering you'd be skittering they'd be skittering
Past
I'd have skittered you'd have skittered he'd have skittered we'd have skittered you'd have skittered they'd have skittered
Past continuous
I'd have been skittering you'd have been skittering he'd have been skittering we'd have been skittering you'd have been skittering they'd have been skittering