English verb conjugation
COULD DENITRIFY

Regular verb: denitrify - denitrified - denitrified

Affirmation

Simple form	V-ing form
I could denitrify you could denitrify she could denitrify we could denitrify you could denitrify they could denitrify	I could be denitrifying you could be denitrifying she could be denitrifying we could be denitrifying you could be denitrifying they could be denitrifying
Perfect	V-ing perfect
I could have denitrified you could have denitrified she could have denitrified we could have denitrified you could have denitrified they could have denitrified	I could have been denitrifying you could have been denitrifying she could have been denitrifying we could have been denitrifying you could have been denitrifying they could have been denitrifying

Negation

Simple form	V-ing form
I could not denitrify you could not denitrify she could not denitrify we could not denitrify you could not denitrify they could not denitrify	I could not be denitrifying you could not be denitrifying she could not be denitrifying we could not be denitrifying you could not be denitrifying they could not be denitrifying
Perfect	V-ing perfect
I could not have denitrified you could not have denitrified she could not have denitrified we could not have denitrified you could not have denitrified they could not have denitrified	I could not have been denitrifying you could not have been denitrifying she could not have been denitrifying we could not have been denitrifying you could not have been denitrifying they could not have been denitrifying

Interrogative form

Simple form	V-ing form
could I denitrify? could you denitrify? could she denitrify? could we denitrify? could you denitrify? could they denitrify?	could I be denitrifying? could you be denitrifying? could she be denitrifying? could we be denitrifying? could you be denitrifying? could they be denitrifying?
Perfect	V-ing perfect
could I have denitrified? could you have denitrified? could she have denitrified? could we have denitrified? could you have denitrified? could they have denitrified?	could I have been denitrifying? could you have been denitrifying? could she have been denitrifying? could we have been denitrifying? could you have been denitrifying? could they have been denitrifying?

Interro-negative form

Simple form	V-ing form
could I not denitrify? could you not denitrify? could she not denitrify? could we not denitrify? could you not denitrify? could they not denitrify?	could I not be denitrifying? could you not be denitrifying? could she not be denitrifying? could we not be denitrifying? could you not be denitrifying? could they not be denitrifying?
Perfect	V-ing perfect
could I not have denitrified? could you not have denitrified? could she not have denitrified? could we not have denitrified? could you not have denitrified? could they not have denitrified?	could I not have been denitrifying? could you not have been denitrifying? could she not have been denitrifying? could we not have been denitrifying? could you not have been denitrifying? could they not have been denitrifying?