English verb conjugation COULD DEVITALISE

Regular verb: devitalise - devitalised - devitalised

Affirmation

Simple form

I could devitalise
you could devitalise
he could devitalise
we could devitalise
you could devitalise
they could devitalise

V-ing form

I could be devitalising
you could be devitalising
he could be devitalising
we could be devitalising
you could be devitalising
they could be devitalising

Perfect

I could have devitalised
you could have devitalised
he could have devitalised
we could have devitalised
you could have devitalised
they could have devitalised

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I devitalise?
could you devitalise?
could he devitalise?
could we devitalise?
could you devitalise?
could they devitalise?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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