English verb conjugation COULD DEVITRIFY

Regular verb: devitrify - devitrified - devitrified

Affirmation

Simple form

I could devitrify
you could devitrify
he could devitrify
we could devitrify
you could devitrify
they could devitrify

V-ing form

I could be devitrifying
you could be devitrifying
he could be devitrifying
we could be devitrifying
you could be devitrifying
they could be devitrifying

Perfect

I could have devitrified
you could have devitrified
he could have devitrified
we could have devitrified
you could have devitrified
they could have devitrified

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I devitrify?
could you devitrify?
could he devitrify?
could we devitrify?
could you devitrify?
could they devitrify?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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