could dinner dinner
Regular verb: dinner dinner - dinner dinnered- dinner dinnered

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

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could dinner dinner
you could dinner dinner
he could dinner dinner
we could dinner dinner
you could dinner dinner
they could dinner dinner 	I could be dinner dinnering
you could be dinner dinnering
he could be dinner dinnering
we could be dinner dinnering
you could be dinner dinnering
they could be dinner dinnering	I could have dinner dinnered
you could have dinner dinnered
he could have dinner dinnered
we could have dinner dinnered
you could have dinner dinnered
they could have dinner dinnered	I could have been dinner dinnering
you could have been dinner dinnering
he could have been dinner dinnering
we could have been dinner dinnering
you could have been dinner dinnering
they could have been dinner dinnering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not dinner dinner
you could not dinner dinner
he could not dinner dinner
we could not dinner dinner
you could not dinner dinner
they could not dinner dinner 	I could not be dinner dinnering
you could not be dinner dinnering
he could not be dinner dinnering
we could not be dinner dinnering
you could not be dinner dinnering
they could not be dinner dinnering	I could not have dinner dinnered
you could not have dinner dinnered
he could not have dinner dinnered
we could not have dinner dinnered
you could not have dinner dinnered
they could not have dinner dinnered	I could not have been dinner dinnering
you could not have been dinner dinnering
he could not have been dinner dinnering
we could not have been dinner dinnering
you could not have been dinner dinnering
they could not have been dinner dinnering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I dinner dinner?
could you dinner dinner?
could he dinner dinner?
could we dinner dinner?
could you dinner dinner?
could they dinner dinner? 	could I be dinner dinnering?
could you be dinner dinnering?
could he be dinner dinnering?
could we be dinner dinnering?
could you be dinner dinnering?
could they be dinner dinnering? 	could I have dinner dinnered?
could you have dinner dinnered?
could he have dinner dinnered?
could we have dinner dinnered?
could you have dinner dinnered?
could they have dinner dinnered? 	could I have been dinner dinnering?
could you have been dinner dinnering?
could he have been dinner dinnering?
could we have been dinner dinnering?
could you have been dinner dinnering?
could they have been dinner dinnering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not dinner dinner?
could you not dinner dinner?
could he not dinner dinner?
could we not dinner dinner?
could you not dinner dinner?
could they not dinner dinner? 	could I not be dinner dinnering?
could you not be dinner dinnering?
could he not be dinner dinnering?
could we not be dinner dinnering?
could you not be dinner dinnering?
could they not be dinner dinnering? 	could I not have dinner dinnered?
could you not have dinner dinnered?
could he not have dinner dinnered?
could we not have dinner dinnered?
could you not have dinner dinnered?
could they not have dinner dinnered? 	could I not have been dinner dinnering?
could you not have been dinner dinnering?
could he not have been dinner dinnering?
could we not have been dinner dinnering?
could you not have been dinner dinnering?
could they not have been dinner dinnering?