English verb conjugation COULD SULFURIZE

Regular verb: sulfurize - sulfurized - sulfurized

Affirmation

Simple form

I could sulfurize
you could sulfurize
he could sulfurize
we could sulfurize
you could sulfurize
they could sulfurize

V-ing form

I could be sulfurizing
you could be sulfurizing
he could be sulfurizing
we could be sulfurizing
you could be sulfurizing
they could be sulfurizing

Perfect

I could have sulfurized
you could have sulfurized
he could have sulfurized
we could have sulfurized
you could have sulfurized
they could have sulfurized

V-ing perfect

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

Negation

Simple form

I could not sulfurize
you could not sulfurize
he could not sulfurize
we could not sulfurize
you could not sulfurize
they could not sulfurize

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I sulfurize?
could you sulfurize?
could he sulfurize?
could we sulfurize?
could you sulfurize?
could they sulfurize?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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