should unzip
Regular verb: unzip - unziped- unziped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd unzip
you'd unzip
he'd unzip
we'd unzip
you'd unzip
they'd unzip 	I'd be unziping
you'd be unziping
he'd be unziping
we'd be unziping
you'd be unziping
they'd be unziping	I should've unziped
you should've unziped
he should've unziped
we should've unziped
you should've unziped
they should've unziped	I should've been unziping
you should've been unziping
he should've been unziping
we should've been unziping
you should've been unziping
they should've been unziping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't unzip
you shouldn't unzip
he shouldn't unzip
we shouldn't unzip
you shouldn't unzip
they shouldn't unzip 	I shouldn't be unziping
you shouldn't be unziping
he shouldn't be unziping
we shouldn't be unziping
you shouldn't be unziping
they shouldn't be unziping	I shouldn't have unziped
you shouldn't have unziped
he shouldn't have unziped
we shouldn't have unziped
you shouldn't have unziped
they shouldn't have unziped	I shouldn't have been unziping
you shouldn't have been unziping
he shouldn't have been unziping
we shouldn't have been unziping
you shouldn't have been unziping
they shouldn't have been unziping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I unzip?
should you unzip?
should he unzip?
should we unzip?
should you unzip?
should they unzip? 	should I be unziping?
should you be unziping?
should he be unziping?
should we be unziping?
should you be unziping?
should they be unziping? 	should I have unziped?
should you have unziped?
should he have unziped?
should we have unziped?
should you have unziped?
should they have unziped? 	should I have been unziping?
should you have been unziping?
should he have been unziping?
should we have been unziping?
should you have been unziping?
should they have been unziping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I unzip?
shouldn't you unzip?
shouldn't he unzip?
shouldn't we unzip?
shouldn't you unzip?
shouldn't they unzip? 	shouldn't I be unziping?
shouldn't you be unziping?
shouldn't he be unziping?
shouldn't we be unziping?
shouldn't you be unziping?
shouldn't they be unziping? 	shouldn't I have unziped?
shouldn't you have unziped?
shouldn't he have unziped?
shouldn't we have unziped?
shouldn't you have unziped?
shouldn't they have unziped? 	shouldn't I have been unziping?
shouldn't you have been unziping?
shouldn't he have been unziping?
shouldn't we have been unziping?
shouldn't you have been unziping?
shouldn't they have been unziping?