can gibber
Regular verb: gibber - gibbered- gibbered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can gibber
you can gibber
she can gibber
we can gibber
you can gibber
they can gibber 	I can be gibbering
you can be gibbering
she can be gibbering
we can be gibbering
you can be gibbering
they can be gibbering	I can have gibbered
you can have gibbered
she can have gibbered
we can have gibbered
you can have gibbered
they can have gibbered	I can have been gibbering
you can have been gibbering
she can have been gibbering
we can have been gibbering
you can have been gibbering
they can have been gibbering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't gibber
you can't gibber
she can't gibber
we can't gibber
you can't gibber
they can't gibber 	I can't be gibbering
you can't be gibbering
she can't be gibbering
we can't be gibbering
you can't be gibbering
they can't be gibbering	I can't have gibbered
you can't have gibbered
she can't have gibbered
we can't have gibbered
you can't have gibbered
they can't have gibbered	I can't have been gibbering
you can't have been gibbering
she can't have been gibbering
we can't have been gibbering
you can't have been gibbering
they can't have been gibbering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I gibber?
can you gibber?
can she gibber?
can we gibber?
can you gibber?
can they gibber? 	can I be gibbering?
can you be gibbering?
can she be gibbering?
can we be gibbering?
can you be gibbering?
can they be gibbering? 	can I have gibbered?
can you have gibbered?
can she have gibbered?
can we have gibbered?
can you have gibbered?
can they have gibbered? 	can I have been gibbering?
can you have been gibbering?
can she have been gibbering?
can we have been gibbering?
can you have been gibbering?
can they have been gibbering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I gibber?
can't you gibber?
can't she gibber?
can't we gibber?
can't you gibber?
can't they gibber? 	can't I be gibbering?
can't you be gibbering?
can't she be gibbering?
can't we be gibbering?
can't you be gibbering?
can't they be gibbering? 	can't I have gibbered?
can't you have gibbered?
can't she have gibbered?
can't we have gibbered?
can't you have gibbered?
can't they have gibbered? 	can't I have been gibbering?
can't you have been gibbering?
can't she have been gibbering?
can't we have been gibbering?
can't you have been gibbering?
can't they have been gibbering?