English verb conjugation COULD DEMATERIALISE

Regular verb: dematerialise - dematerialised - dematerialised

Affirmation

Simple form

I could dematerialise
you could dematerialise
he could dematerialise
we could dematerialise
you could dematerialise
they could dematerialise

V-ing form

I could be dematerialising
you could be dematerialising
he could be dematerialising
we could be dematerialising
you could be dematerialising
they could be dematerialising

Perfect

I could have dematerialised
you could have dematerialised
he could have dematerialised
we could have dematerialised
you could have dematerialised
they could have dematerialised

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I dematerialise?
could you dematerialise?
could he dematerialise?
could we dematerialise?
could you dematerialise?
could they dematerialise?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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