could overfulfill
Regular verb: overfulfill - overfulfilled- overfulfilled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could overfulfill
you could overfulfill
he could overfulfill
we could overfulfill
you could overfulfill
they could overfulfill 	I could be overfulfilling
you could be overfulfilling
he could be overfulfilling
we could be overfulfilling
you could be overfulfilling
they could be overfulfilling	I could have overfulfilled
you could have overfulfilled
he could have overfulfilled
we could have overfulfilled
you could have overfulfilled
they could have overfulfilled	I could have been overfulfilling
you could have been overfulfilling
he could have been overfulfilling
we could have been overfulfilling
you could have been overfulfilling
they could have been overfulfilling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't overfulfill
you couldn't overfulfill
he couldn't overfulfill
we couldn't overfulfill
you couldn't overfulfill
they couldn't overfulfill 	I couldn't be overfulfilling
you couldn't be overfulfilling
he couldn't be overfulfilling
we couldn't be overfulfilling
you couldn't be overfulfilling
they couldn't be overfulfilling	I couldn't have overfulfilled
you couldn't have overfulfilled
he couldn't have overfulfilled
we couldn't have overfulfilled
you couldn't have overfulfilled
they couldn't have overfulfilled	I couldn't have been overfulfilling
you couldn't have been overfulfilling
he couldn't have been overfulfilling
we couldn't have been overfulfilling
you couldn't have been overfulfilling
they couldn't have been overfulfilling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I overfulfill?
could you overfulfill?
could he overfulfill?
could we overfulfill?
could you overfulfill?
could they overfulfill? 	could I be overfulfilling?
could you be overfulfilling?
could he be overfulfilling?
could we be overfulfilling?
could you be overfulfilling?
could they be overfulfilling? 	could I have overfulfilled?
could you have overfulfilled?
could he have overfulfilled?
could we have overfulfilled?
could you have overfulfilled?
could they have overfulfilled? 	could I have been overfulfilling?
could you have been overfulfilling?
could he have been overfulfilling?
could we have been overfulfilling?
could you have been overfulfilling?
could they have been overfulfilling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I overfulfill?
couldn't you overfulfill?
couldn't he overfulfill?
couldn't we overfulfill?
couldn't you overfulfill?
couldn't they overfulfill? 	couldn't I be overfulfilling?
couldn't you be overfulfilling?
couldn't he be overfulfilling?
couldn't we be overfulfilling?
couldn't you be overfulfilling?
couldn't they be overfulfilling? 	couldn't I have overfulfilled?
couldn't you have overfulfilled?
couldn't he have overfulfilled?
couldn't we have overfulfilled?
couldn't you have overfulfilled?
couldn't they have overfulfilled? 	couldn't I have been overfulfilling?
couldn't you have been overfulfilling?
couldn't he have been overfulfilling?
couldn't we have been overfulfilling?
couldn't you have been overfulfilling?
couldn't they have been overfulfilling?