should collapse
Regular verb: collapse - collapsed- collapsed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd collapse
you'd collapse
she'd collapse
we'd collapse
you'd collapse
they'd collapse 	I'd be collapsing
you'd be collapsing
she'd be collapsing
we'd be collapsing
you'd be collapsing
they'd be collapsing	I should've collapsed
you should've collapsed
she should've collapsed
we should've collapsed
you should've collapsed
they should've collapsed	I should've been collapsing
you should've been collapsing
she should've been collapsing
we should've been collapsing
you should've been collapsing
they should've been collapsing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't collapse
you shouldn't collapse
she shouldn't collapse
we shouldn't collapse
you shouldn't collapse
they shouldn't collapse 	I shouldn't be collapsing
you shouldn't be collapsing
she shouldn't be collapsing
we shouldn't be collapsing
you shouldn't be collapsing
they shouldn't be collapsing	I shouldn't have collapsed
you shouldn't have collapsed
she shouldn't have collapsed
we shouldn't have collapsed
you shouldn't have collapsed
they shouldn't have collapsed	I shouldn't have been collapsing
you shouldn't have been collapsing
she shouldn't have been collapsing
we shouldn't have been collapsing
you shouldn't have been collapsing
they shouldn't have been collapsing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I collapse?
should you collapse?
should she collapse?
should we collapse?
should you collapse?
should they collapse? 	should I be collapsing?
should you be collapsing?
should she be collapsing?
should we be collapsing?
should you be collapsing?
should they be collapsing? 	should I have collapsed?
should you have collapsed?
should she have collapsed?
should we have collapsed?
should you have collapsed?
should they have collapsed? 	should I have been collapsing?
should you have been collapsing?
should she have been collapsing?
should we have been collapsing?
should you have been collapsing?
should they have been collapsing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I collapse?
shouldn't you collapse?
shouldn't she collapse?
shouldn't we collapse?
shouldn't you collapse?
shouldn't they collapse? 	shouldn't I be collapsing?
shouldn't you be collapsing?
shouldn't she be collapsing?
shouldn't we be collapsing?
shouldn't you be collapsing?
shouldn't they be collapsing? 	shouldn't I have collapsed?
shouldn't you have collapsed?
shouldn't she have collapsed?
shouldn't we have collapsed?
shouldn't you have collapsed?
shouldn't they have collapsed? 	shouldn't I have been collapsing?
shouldn't you have been collapsing?
shouldn't she have been collapsing?
shouldn't we have been collapsing?
shouldn't you have been collapsing?
shouldn't they have been collapsing?