I'll be tampering you'll be tampering he'll be tampering we'll be tampering you'll be tampering they'll be tampering
Future perfect
I'll have tampered you'll have tampered he'll have tampered we'll have tampered you'll have tampered they'll have tampered
Future perfect continuous
I'll have been tampering you'll have been tampering he'll have been tampering we'll have been tampering you'll have been tampering they'll have been tampering
I'd be tampering you'd be tampering he'd be tampering we'd be tampering you'd be tampering they'd be tampering
Past
I'd have tampered you'd have tampered he'd have tampered we'd have tampered you'd have tampered they'd have tampered
Past continuous
I'd have been tampering you'd have been tampering he'd have been tampering we'd have been tampering you'd have been tampering they'd have been tampering