I've been machine-guning you've been machine-guning he's been machine-guning we've been machine-guning you've been machine-guning they've been machine-guning
I'd been machine-guning you'd been machine-guning he'd been machine-guning we'd been machine-guning you'd been machine-guning they'd been machine-guning
I'll be machine-guning you'll be machine-guning he'll be machine-guning we'll be machine-guning you'll be machine-guning they'll be machine-guning
Future perfect
I'll have machine-guned you'll have machine-guned he'll have machine-guned we'll have machine-guned you'll have machine-guned they'll have machine-guned
Future perfect continuous
I'll have been machine-guning you'll have been machine-guning he'll have been machine-guning we'll have been machine-guning you'll have been machine-guning they'll have been machine-guning
I'd be machine-guning you'd be machine-guning he'd be machine-guning we'd be machine-guning you'd be machine-guning they'd be machine-guning
Past
I'd have machine-guned you'd have machine-guned he'd have machine-guned we'd have machine-guned you'd have machine-guned they'd have machine-guned
Past continuous
I'd have been machine-guning you'd have been machine-guning he'd have been machine-guning we'd have been machine-guning you'd have been machine-guning they'd have been machine-guning