should unstrap
Regular verb: unstrap - unstrapped- unstrapped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd unstrap
you'd unstrap
he'd unstrap
we'd unstrap
you'd unstrap
they'd unstrap 	I'd be unstrapping
you'd be unstrapping
he'd be unstrapping
we'd be unstrapping
you'd be unstrapping
they'd be unstrapping	I should've unstrapped
you should've unstrapped
he should've unstrapped
we should've unstrapped
you should've unstrapped
they should've unstrapped	I should've been unstrapping
you should've been unstrapping
he should've been unstrapping
we should've been unstrapping
you should've been unstrapping
they should've been unstrapping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't unstrap
you shouldn't unstrap
he shouldn't unstrap
we shouldn't unstrap
you shouldn't unstrap
they shouldn't unstrap 	I shouldn't be unstrapping
you shouldn't be unstrapping
he shouldn't be unstrapping
we shouldn't be unstrapping
you shouldn't be unstrapping
they shouldn't be unstrapping	I shouldn't have unstrapped
you shouldn't have unstrapped
he shouldn't have unstrapped
we shouldn't have unstrapped
you shouldn't have unstrapped
they shouldn't have unstrapped	I shouldn't have been unstrapping
you shouldn't have been unstrapping
he shouldn't have been unstrapping
we shouldn't have been unstrapping
you shouldn't have been unstrapping
they shouldn't have been unstrapping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I unstrap?
should you unstrap?
should he unstrap?
should we unstrap?
should you unstrap?
should they unstrap? 	should I be unstrapping?
should you be unstrapping?
should he be unstrapping?
should we be unstrapping?
should you be unstrapping?
should they be unstrapping? 	should I have unstrapped?
should you have unstrapped?
should he have unstrapped?
should we have unstrapped?
should you have unstrapped?
should they have unstrapped? 	should I have been unstrapping?
should you have been unstrapping?
should he have been unstrapping?
should we have been unstrapping?
should you have been unstrapping?
should they have been unstrapping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I unstrap?
shouldn't you unstrap?
shouldn't he unstrap?
shouldn't we unstrap?
shouldn't you unstrap?
shouldn't they unstrap? 	shouldn't I be unstrapping?
shouldn't you be unstrapping?
shouldn't he be unstrapping?
shouldn't we be unstrapping?
shouldn't you be unstrapping?
shouldn't they be unstrapping? 	shouldn't I have unstrapped?
shouldn't you have unstrapped?
shouldn't he have unstrapped?
shouldn't we have unstrapped?
shouldn't you have unstrapped?
shouldn't they have unstrapped? 	shouldn't I have been unstrapping?
shouldn't you have been unstrapping?
shouldn't he have been unstrapping?
shouldn't we have been unstrapping?
shouldn't you have been unstrapping?
shouldn't they have been unstrapping?