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