English verb conjugation
COULD NON-PROS

Regular verb: non-pros - non-prosed - non-prosed

Affirmation

Simple form	V-ing form
I could non-pros you could non-pros he could non-pros we could non-pros you could non-pros they could non-pros	I could be non-prosing you could be non-prosing he could be non-prosing we could be non-prosing you could be non-prosing they could be non-prosing
Perfect	V-ing perfect
I could have non-prosed you could have non-prosed he could have non-prosed we could have non-prosed you could have non-prosed they could have non-prosed	I could have been non-prosing you could have been non-prosing he could have been non-prosing we could have been non-prosing you could have been non-prosing they could have been non-prosing

Negation

Simple form	V-ing form
I could not non-pros you could not non-pros he could not non-pros we could not non-pros you could not non-pros they could not non-pros	I could not be non-prosing you could not be non-prosing he could not be non-prosing we could not be non-prosing you could not be non-prosing they could not be non-prosing
Perfect	V-ing perfect
I could not have non-prosed you could not have non-prosed he could not have non-prosed we could not have non-prosed you could not have non-prosed they could not have non-prosed	I could not have been non-prosing you could not have been non-prosing he could not have been non-prosing we could not have been non-prosing you could not have been non-prosing they could not have been non-prosing

Interrogative form

Simple form	V-ing form
could I non-pros? could you non-pros? could he non-pros? could we non-pros? could you non-pros? could they non-pros?	could I be non-prosing? could you be non-prosing? could he be non-prosing? could we be non-prosing? could you be non-prosing? could they be non-prosing?
Perfect	V-ing perfect
could I have non-prosed? could you have non-prosed? could he have non-prosed? could we have non-prosed? could you have non-prosed? could they have non-prosed?	could I have been non-prosing? could you have been non-prosing? could he have been non-prosing? could we have been non-prosing? could you have been non-prosing? could they have been non-prosing?

Interro-negative form

Simple form	V-ing form
could I not non-pros? could you not non-pros? could he not non-pros? could we not non-pros? could you not non-pros? could they not non-pros?	could I not be non-prosing? could you not be non-prosing? could he not be non-prosing? could we not be non-prosing? could you not be non-prosing? could they not be non-prosing?
Perfect	V-ing perfect
could I not have non-prosed? could you not have non-prosed? could he not have non-prosed? could we not have non-prosed? could you not have non-prosed? could they not have non-prosed?	could I not have been non-prosing? could you not have been non-prosing? could he not have been non-prosing? could we not have been non-prosing? could you not have been non-prosing? could they not have been non-prosing?