English verb conjugation COULD RETESTIFY

Regular verb: retestify - retestified - retestified

Affirmation

Simple form

I could retestify
you could retestify
he could retestify
we could retestify
you could retestify
they could retestify

V-ing form

I could be retestifying
you could be retestifying
he could be retestifying
we could be retestifying
you could be retestifying
they could be retestifying

Perfect

I could have retestified
you could have retestified
he could have retestified
we could have retestified
you could have retestified
they could have retestified

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I retestify?
could you retestify?
could he retestify?
could we retestify?
could you retestify?
could they retestify?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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