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