should assign
Regular verb: assign - assigned- assigned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd assign
you'd assign
she'd assign
we'd assign
you'd assign
they'd assign 	I'd be assigning
you'd be assigning
she'd be assigning
we'd be assigning
you'd be assigning
they'd be assigning	I should've assigned
you should've assigned
she should've assigned
we should've assigned
you should've assigned
they should've assigned	I should've been assigning
you should've been assigning
she should've been assigning
we should've been assigning
you should've been assigning
they should've been assigning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't assign
you shouldn't assign
she shouldn't assign
we shouldn't assign
you shouldn't assign
they shouldn't assign 	I shouldn't be assigning
you shouldn't be assigning
she shouldn't be assigning
we shouldn't be assigning
you shouldn't be assigning
they shouldn't be assigning	I shouldn't have assigned
you shouldn't have assigned
she shouldn't have assigned
we shouldn't have assigned
you shouldn't have assigned
they shouldn't have assigned	I shouldn't have been assigning
you shouldn't have been assigning
she shouldn't have been assigning
we shouldn't have been assigning
you shouldn't have been assigning
they shouldn't have been assigning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I assign?
should you assign?
should she assign?
should we assign?
should you assign?
should they assign? 	should I be assigning?
should you be assigning?
should she be assigning?
should we be assigning?
should you be assigning?
should they be assigning? 	should I have assigned?
should you have assigned?
should she have assigned?
should we have assigned?
should you have assigned?
should they have assigned? 	should I have been assigning?
should you have been assigning?
should she have been assigning?
should we have been assigning?
should you have been assigning?
should they have been assigning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I assign?
shouldn't you assign?
shouldn't she assign?
shouldn't we assign?
shouldn't you assign?
shouldn't they assign? 	shouldn't I be assigning?
shouldn't you be assigning?
shouldn't she be assigning?
shouldn't we be assigning?
shouldn't you be assigning?
shouldn't they be assigning? 	shouldn't I have assigned?
shouldn't you have assigned?
shouldn't she have assigned?
shouldn't we have assigned?
shouldn't you have assigned?
shouldn't they have assigned? 	shouldn't I have been assigning?
shouldn't you have been assigning?
shouldn't she have been assigning?
shouldn't we have been assigning?
shouldn't you have been assigning?
shouldn't they have been assigning?