should decline
Regular verb: decline - declined- declined

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd decline
you'd decline
she'd decline
we'd decline
you'd decline
they'd decline 	I'd be declining
you'd be declining
she'd be declining
we'd be declining
you'd be declining
they'd be declining	I should've declined
you should've declined
she should've declined
we should've declined
you should've declined
they should've declined	I should've been declining
you should've been declining
she should've been declining
we should've been declining
you should've been declining
they should've been declining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't decline
you shouldn't decline
she shouldn't decline
we shouldn't decline
you shouldn't decline
they shouldn't decline 	I shouldn't be declining
you shouldn't be declining
she shouldn't be declining
we shouldn't be declining
you shouldn't be declining
they shouldn't be declining	I shouldn't have declined
you shouldn't have declined
she shouldn't have declined
we shouldn't have declined
you shouldn't have declined
they shouldn't have declined	I shouldn't have been declining
you shouldn't have been declining
she shouldn't have been declining
we shouldn't have been declining
you shouldn't have been declining
they shouldn't have been declining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I decline?
should you decline?
should she decline?
should we decline?
should you decline?
should they decline? 	should I be declining?
should you be declining?
should she be declining?
should we be declining?
should you be declining?
should they be declining? 	should I have declined?
should you have declined?
should she have declined?
should we have declined?
should you have declined?
should they have declined? 	should I have been declining?
should you have been declining?
should she have been declining?
should we have been declining?
should you have been declining?
should they have been declining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I decline?
shouldn't you decline?
shouldn't she decline?
shouldn't we decline?
shouldn't you decline?
shouldn't they decline? 	shouldn't I be declining?
shouldn't you be declining?
shouldn't she be declining?
shouldn't we be declining?
shouldn't you be declining?
shouldn't they be declining? 	shouldn't I have declined?
shouldn't you have declined?
shouldn't she have declined?
shouldn't we have declined?
shouldn't you have declined?
shouldn't they have declined? 	shouldn't I have been declining?
shouldn't you have been declining?
shouldn't she have been declining?
shouldn't we have been declining?
shouldn't you have been declining?
shouldn't they have been declining?