I'll be clutching you'll be clutching he'll be clutching we'll be clutching you'll be clutching they'll be clutching
Future perfect
I'll have clutched you'll have clutched he'll have clutched we'll have clutched you'll have clutched they'll have clutched
Future perfect continuous
I'll have been clutching you'll have been clutching he'll have been clutching we'll have been clutching you'll have been clutching they'll have been clutching
I'd be clutching you'd be clutching he'd be clutching we'd be clutching you'd be clutching they'd be clutching
Past
I'd have clutched you'd have clutched he'd have clutched we'd have clutched you'd have clutched they'd have clutched
Past continuous
I'd have been clutching you'd have been clutching he'd have been clutching we'd have been clutching you'd have been clutching they'd have been clutching