English verb conjugation COULD DESULFERIZE

Regular verb: desulferize - desulferized - desulferized

Affirmation

Simple form

I could desulferize
you could desulferize
he could desulferize
we could desulferize
you could desulferize
they could desulferize

V-ing form

I could be desulferizing
you could be desulferizing
he could be desulferizing
we could be desulferizing
you could be desulferizing
they could be desulferizing

Perfect

I could have desulferized
you could have desulferized
he could have desulferized
we could have desulferized
you could have desulferized
they could have desulferized

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I desulferize?
could you desulferize?
could he desulferize?
could we desulferize?
could you desulferize?
could they desulferize?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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