could gibe
Regular verb: gibe - gibed- gibed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could gibe
you could gibe
he could gibe
we could gibe
you could gibe
they could gibe 	I could be gibing
you could be gibing
he could be gibing
we could be gibing
you could be gibing
they could be gibing	I could have gibed
you could have gibed
he could have gibed
we could have gibed
you could have gibed
they could have gibed	I could have been gibing
you could have been gibing
he could have been gibing
we could have been gibing
you could have been gibing
they could have been gibing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not gibe
you could not gibe
he could not gibe
we could not gibe
you could not gibe
they could not gibe 	I could not be gibing
you could not be gibing
he could not be gibing
we could not be gibing
you could not be gibing
they could not be gibing	I could not have gibed
you could not have gibed
he could not have gibed
we could not have gibed
you could not have gibed
they could not have gibed	I could not have been gibing
you could not have been gibing
he could not have been gibing
we could not have been gibing
you could not have been gibing
they could not have been gibing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I gibe?
could you gibe?
could he gibe?
could we gibe?
could you gibe?
could they gibe? 	could I be gibing?
could you be gibing?
could he be gibing?
could we be gibing?
could you be gibing?
could they be gibing? 	could I have gibed?
could you have gibed?
could he have gibed?
could we have gibed?
could you have gibed?
could they have gibed? 	could I have been gibing?
could you have been gibing?
could he have been gibing?
could we have been gibing?
could you have been gibing?
could they have been gibing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not gibe?
could you not gibe?
could he not gibe?
could we not gibe?
could you not gibe?
could they not gibe? 	could I not be gibing?
could you not be gibing?
could he not be gibing?
could we not be gibing?
could you not be gibing?
could they not be gibing? 	could I not have gibed?
could you not have gibed?
could he not have gibed?
could we not have gibed?
could you not have gibed?
could they not have gibed? 	could I not have been gibing?
could you not have been gibing?
could he not have been gibing?
could we not have been gibing?
could you not have been gibing?
could they not have been gibing?