can flicker
Regular verb: flicker - flickered- flickered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can flicker
you can flicker
she can flicker
we can flicker
you can flicker
they can flicker 	I can be flickering
you can be flickering
she can be flickering
we can be flickering
you can be flickering
they can be flickering	I can have flickered
you can have flickered
she can have flickered
we can have flickered
you can have flickered
they can have flickered	I can have been flickering
you can have been flickering
she can have been flickering
we can have been flickering
you can have been flickering
they can have been flickering	

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

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

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