I'd be investigating you'd be investigating he'd be investigating we'd be investigating you'd be investigating they'd be investigating
Perfect
I would've investigated you would've investigated he would've investigated we would've investigated you would've investigated they would've investigated
V-ing perfect
I would've been investigating you would've been investigating he would've been investigating we would've been investigating you would've been investigating they would've been investigating
Negation
Simple form
I wouldn't investigate you wouldn't investigate he wouldn't investigate we wouldn't investigate you wouldn't investigate they wouldn't investigate
V-ing form
I wouldn't be investigating you wouldn't be investigating he wouldn't be investigating we wouldn't be investigating you wouldn't be investigating they wouldn't be investigating
Perfect
I wouldn't have investigated you wouldn't have investigated he wouldn't have investigated we wouldn't have investigated you wouldn't have investigated they wouldn't have investigated
V-ing perfect
I wouldn't have been investigating you wouldn't have been investigating he wouldn't have been investigating we wouldn't have been investigating you wouldn't have been investigating they wouldn't have been investigating
Interrogative form
Simple form
would I investigate? would you investigate? would he investigate? would we investigate? would you investigate? would they investigate?
V-ing form
would I be investigating? would you be investigating? would he be investigating? would we be investigating? would you be investigating? would they be investigating?
Perfect
would I have investigated? would you have investigated? would he have investigated? would we have investigated? would you have investigated? would they have investigated?
V-ing perfect
would I have been investigating? would you have been investigating? would he have been investigating? would we have been investigating? would you have been investigating? would they have been investigating?
Interro-negative form
Simple form
wouldn't I investigate? wouldn't you investigate? wouldn't he investigate? wouldn't we investigate? wouldn't you investigate? wouldn't they investigate?
V-ing form
wouldn't I be investigating? wouldn't you be investigating? wouldn't he be investigating? wouldn't we be investigating? wouldn't you be investigating? wouldn't they be investigating?
Perfect
wouldn't I have investigated? wouldn't you have investigated? wouldn't he have investigated? wouldn't we have investigated? wouldn't you have investigated? wouldn't they have investigated?
V-ing perfect
wouldn't I have been investigating? wouldn't you have been investigating? wouldn't he have been investigating? wouldn't we have been investigating? wouldn't you have been investigating? wouldn't they have been investigating?