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