English verb conjugation COULD DEVALUE

Regular verb: devalue - devalued - devalued

Affirmation

Simple form

I could devalue
you could devalue
he could devalue
we could devalue
you could devalue
they could devalue

V-ing form

I could be devaluing
you could be devaluing
he could be devaluing
we could be devaluing
you could be devaluing
they could be devaluing

Perfect

I could have devalued
you could have devalued
he could have devalued
we could have devalued
you could have devalued
they could have devalued

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I devalue?
could you devalue?
could he devalue?
could we devalue?
could you devalue?
could they devalue?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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