I'll be shivering you'll be shivering he'll be shivering we'll be shivering you'll be shivering they'll be shivering
Future perfect
I'll have shivered you'll have shivered he'll have shivered we'll have shivered you'll have shivered they'll have shivered
Future perfect continuous
I'll have been shivering you'll have been shivering he'll have been shivering we'll have been shivering you'll have been shivering they'll have been shivering
I'd be shivering you'd be shivering he'd be shivering we'd be shivering you'd be shivering they'd be shivering
Past
I'd have shivered you'd have shivered he'd have shivered we'd have shivered you'd have shivered they'd have shivered
Past continuous
I'd have been shivering you'd have been shivering he'd have been shivering we'd have been shivering you'd have been shivering they'd have been shivering