could cab cab
Regular verb: cab cab - cab cabed- cab cabed

, this verb may not exist. Conjugation is given as example.

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could cab cab
you could cab cab
he could cab cab
we could cab cab
you could cab cab
they could cab cab 	I could be cab cabing
you could be cab cabing
he could be cab cabing
we could be cab cabing
you could be cab cabing
they could be cab cabing	I could have cab cabed
you could have cab cabed
he could have cab cabed
we could have cab cabed
you could have cab cabed
they could have cab cabed	I could have been cab cabing
you could have been cab cabing
he could have been cab cabing
we could have been cab cabing
you could have been cab cabing
they could have been cab cabing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not cab cab
you could not cab cab
he could not cab cab
we could not cab cab
you could not cab cab
they could not cab cab 	I could not be cab cabing
you could not be cab cabing
he could not be cab cabing
we could not be cab cabing
you could not be cab cabing
they could not be cab cabing	I could not have cab cabed
you could not have cab cabed
he could not have cab cabed
we could not have cab cabed
you could not have cab cabed
they could not have cab cabed	I could not have been cab cabing
you could not have been cab cabing
he could not have been cab cabing
we could not have been cab cabing
you could not have been cab cabing
they could not have been cab cabing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I cab cab?
could you cab cab?
could he cab cab?
could we cab cab?
could you cab cab?
could they cab cab? 	could I be cab cabing?
could you be cab cabing?
could he be cab cabing?
could we be cab cabing?
could you be cab cabing?
could they be cab cabing? 	could I have cab cabed?
could you have cab cabed?
could he have cab cabed?
could we have cab cabed?
could you have cab cabed?
could they have cab cabed? 	could I have been cab cabing?
could you have been cab cabing?
could he have been cab cabing?
could we have been cab cabing?
could you have been cab cabing?
could they have been cab cabing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not cab cab?
could you not cab cab?
could he not cab cab?
could we not cab cab?
could you not cab cab?
could they not cab cab? 	could I not be cab cabing?
could you not be cab cabing?
could he not be cab cabing?
could we not be cab cabing?
could you not be cab cabing?
could they not be cab cabing? 	could I not have cab cabed?
could you not have cab cabed?
could he not have cab cabed?
could we not have cab cabed?
could you not have cab cabed?
could they not have cab cabed? 	could I not have been cab cabing?
could you not have been cab cabing?
could he not have been cab cabing?
could we not have been cab cabing?
could you not have been cab cabing?
could they not have been cab cabing?