English verb conjugation COULD FERTILIZE

Regular verb: fertilize - fertilized - fertilized

Affirmation

Simple form

I could fertilize
you could fertilize
he could fertilize
we could fertilize
you could fertilize
they could fertilize

V-ing form

I could be fertilizing
you could be fertilizing
he could be fertilizing
we could be fertilizing
you could be fertilizing
they could be fertilizing

Perfect

I could have fertilized
you could have fertilized
he could have fertilized
we could have fertilized
you could have fertilized
they could have fertilized

V-ing perfect

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

Negation

Simple form

I could not fertilize
you could not fertilize
he could not fertilize
we could not fertilize
you could not fertilize
they could not fertilize

V-ing form

I could not be fertilizing
you could not be fertilizing
he could not be fertilizing
we could not be fertilizing
you could not be fertilizing
they could not be fertilizing

Perfect

I could not have fertilized
you could not have fertilized
he could not have fertilized
we could not have fertilized
you could not have fertilized
they could not have fertilized

V-ing perfect

I could not have been fertilizing
you could not have been fertilizing
he could not have been fertilizing
we could not have been fertilizing
you could not have been fertilizing
they could not have been fertilizing

Interrogative form

Simple form

could I fertilize?
could you fertilize?
could he fertilize?
could we fertilize?
could you fertilize?
could they fertilize?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

could I not fertilize?
could you not fertilize?
could he not fertilize?
could we not fertilize?
could you not fertilize?
could they not fertilize?

V-ing form

could I not be fertilizing?
could you not be fertilizing?
could he not be fertilizing?
could we not be fertilizing?
could you not be fertilizing?
could they not be fertilizing?

Perfect

could I not have fertilized?
could you not have fertilized?
could he not have fertilized?
could we not have fertilized?
could you not have fertilized?
could they not have fertilized?

V-ing perfect

could I not have been fertilizing?
could you not have been fertilizing?
could he not have been fertilizing?
could we not have been fertilizing?
could you not have been fertilizing?
could they not have been fertilizing?

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