English verb conjugation COULD DESULFERISE

Regular verb: desulferise - desulferised - desulferised

Affirmation

Simple form

I could desulferise
you could desulferise
he could desulferise
we could desulferise
you could desulferise
they could desulferise

V-ing form

I could be desulferising
you could be desulferising
he could be desulferising
we could be desulferising
you could be desulferising
they could be desulferising

Perfect

I could have desulferised
you could have desulferised
he could have desulferised
we could have desulferised
you could have desulferised
they could have desulferised

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I desulferise?
could you desulferise?
could he desulferise?
could we desulferise?
could you desulferise?
could they desulferise?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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