English verb conjugation CAN TESTIFY

Regular verb: testify - testified - testified

Affirmation

Simple form

I can testify
you can testify
she can testify
we can testify
you can testify
they can testify

V-ing form

I can be testifying
you can be testifying
she can be testifying
we can be testifying
you can be testifying
they can be testifying

Perfect

I can have testified
you can have testified
she can have testified
we can have testified
you can have testified
they can have testified

V-ing perfect

I can have been testifying
you can have been testifying
she can have been testifying
we can have been testifying
you can have been testifying
they can have been testifying

Negation

Simple form

I can't testify
you can't testify
she can't testify
we can't testify
you can't testify
they can't testify

V-ing form

I can't be testifying
you can't be testifying
she can't be testifying
we can't be testifying
you can't be testifying
they can't be testifying

Perfect

I can't have testified
you can't have testified
she can't have testified
we can't have testified
you can't have testified
they can't have testified

V-ing perfect

I can't have been testifying
you can't have been testifying
she can't have been testifying
we can't have been testifying
you can't have been testifying
they can't have been testifying

Interrogative form

Simple form

can I testify?
can you testify?
can she testify?
can we testify?
can you testify?
can they testify?

V-ing form

can I be testifying?
can you be testifying?
can she be testifying?
can we be testifying?
can you be testifying?
can they be testifying?

Perfect

can I have testified?
can you have testified?
can she have testified?
can we have testified?
can you have testified?
can they have testified?

V-ing perfect

can I have been testifying?
can you have been testifying?
can she have been testifying?
can we have been testifying?
can you have been testifying?
can they have been testifying?

Interro-negative form

Simple form

can't I testify?
can't you testify?
can't she testify?
can't we testify?
can't you testify?
can't they testify?

V-ing form

can't I be testifying?
can't you be testifying?
can't she be testifying?
can't we be testifying?
can't you be testifying?
can't they be testifying?

Perfect

can't I have testified?
can't you have testified?
can't she have testified?
can't we have testified?
can't you have testified?
can't they have testified?

V-ing perfect

can't I have been testifying?
can't you have been testifying?
can't she have been testifying?
can't we have been testifying?
can't you have been testifying?
can't they have been testifying?

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