should flicker
Regular verb: flicker - flickered- flickered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd flicker
you'd flicker
she'd flicker
we'd flicker
you'd flicker
they'd flicker 	I'd be flickering
you'd be flickering
she'd be flickering
we'd be flickering
you'd be flickering
they'd be flickering	I should've flickered
you should've flickered
she should've flickered
we should've flickered
you should've flickered
they should've flickered	I should've been flickering
you should've been flickering
she should've been flickering
we should've been flickering
you should've been flickering
they should've been flickering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't flicker
you shouldn't flicker
she shouldn't flicker
we shouldn't flicker
you shouldn't flicker
they shouldn't flicker 	I shouldn't be flickering
you shouldn't be flickering
she shouldn't be flickering
we shouldn't be flickering
you shouldn't be flickering
they shouldn't be flickering	I shouldn't have flickered
you shouldn't have flickered
she shouldn't have flickered
we shouldn't have flickered
you shouldn't have flickered
they shouldn't have flickered	I shouldn't have been flickering
you shouldn't have been flickering
she shouldn't have been flickering
we shouldn't have been flickering
you shouldn't have been flickering
they shouldn't have been flickering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I flicker?
should you flicker?
should she flicker?
should we flicker?
should you flicker?
should they flicker? 	should I be flickering?
should you be flickering?
should she be flickering?
should we be flickering?
should you be flickering?
should they be flickering? 	should I have flickered?
should you have flickered?
should she have flickered?
should we have flickered?
should you have flickered?
should they have flickered? 	should I have been flickering?
should you have been flickering?
should she have been flickering?
should we have been flickering?
should you have been flickering?
should they have been flickering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I flicker?
shouldn't you flicker?
shouldn't she flicker?
shouldn't we flicker?
shouldn't you flicker?
shouldn't they flicker? 	shouldn't I be flickering?
shouldn't you be flickering?
shouldn't she be flickering?
shouldn't we be flickering?
shouldn't you be flickering?
shouldn't they be flickering? 	shouldn't I have flickered?
shouldn't you have flickered?
shouldn't she have flickered?
shouldn't we have flickered?
shouldn't you have flickered?
shouldn't they have flickered? 	shouldn't I have been flickering?
shouldn't you have been flickering?
shouldn't she have been flickering?
shouldn't we have been flickering?
shouldn't you have been flickering?
shouldn't they have been flickering?