English verb conjugation COULD NITRIFY

Regular verb: nitrify - nitrified - nitrified

Affirmation

Simple form

I could nitrify
you could nitrify
he could nitrify
we could nitrify
you could nitrify
they could nitrify

V-ing form

I could be nitrifying
you could be nitrifying
he could be nitrifying
we could be nitrifying
you could be nitrifying
they could be nitrifying

Perfect

I could have nitrified
you could have nitrified
he could have nitrified
we could have nitrified
you could have nitrified
they could have nitrified

V-ing perfect

I could have been nitrifying
you could have been nitrifying
he could have been nitrifying
we could have been nitrifying
you could have been nitrifying
they could have been nitrifying

Negation

Simple form

I couldn't nitrify
you couldn't nitrify
he couldn't nitrify
we couldn't nitrify
you couldn't nitrify
they couldn't nitrify

V-ing form

I couldn't be nitrifying
you couldn't be nitrifying
he couldn't be nitrifying
we couldn't be nitrifying
you couldn't be nitrifying
they couldn't be nitrifying

Perfect

I couldn't have nitrified
you couldn't have nitrified
he couldn't have nitrified
we couldn't have nitrified
you couldn't have nitrified
they couldn't have nitrified

V-ing perfect

I couldn't have been nitrifying
you couldn't have been nitrifying
he couldn't have been nitrifying
we couldn't have been nitrifying
you couldn't have been nitrifying
they couldn't have been nitrifying

Interrogative form

Simple form

could I nitrify?
could you nitrify?
could he nitrify?
could we nitrify?
could you nitrify?
could they nitrify?

V-ing form

could I be nitrifying?
could you be nitrifying?
could he be nitrifying?
could we be nitrifying?
could you be nitrifying?
could they be nitrifying?

Perfect

could I have nitrified?
could you have nitrified?
could he have nitrified?
could we have nitrified?
could you have nitrified?
could they have nitrified?

V-ing perfect

could I have been nitrifying?
could you have been nitrifying?
could he have been nitrifying?
could we have been nitrifying?
could you have been nitrifying?
could they have been nitrifying?

Interro-negative form

Simple form

couldn't I nitrify?
couldn't you nitrify?
couldn't he nitrify?
couldn't we nitrify?
couldn't you nitrify?
couldn't they nitrify?

V-ing form

couldn't I be nitrifying?
couldn't you be nitrifying?
couldn't he be nitrifying?
couldn't we be nitrifying?
couldn't you be nitrifying?
couldn't they be nitrifying?

Perfect

couldn't I have nitrified?
couldn't you have nitrified?
couldn't he have nitrified?
couldn't we have nitrified?
couldn't you have nitrified?
couldn't they have nitrified?

V-ing perfect

couldn't I have been nitrifying?
couldn't you have been nitrifying?
couldn't he have been nitrifying?
couldn't we have been nitrifying?
couldn't you have been nitrifying?
couldn't they have been nitrifying?

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