English verb conjugation CAN UNDO

Irregular verb: undo - undid - undone

Affirmation

Simple form

I can undo
you can undo
she can undo
we can undo
you can undo
they can undo

V-ing form

I can be undoing
you can be undoing
she can be undoing
we can be undoing
you can be undoing
they can be undoing

Perfect

I can have undone
you can have undone
she can have undone
we can have undone
you can have undone
they can have undone

V-ing perfect

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

Negation

Simple form

I cannot undo
you cannot undo
she cannot undo
we cannot undo
you cannot undo
they cannot undo

V-ing form

I cannot be undoing
you cannot be undoing
she cannot be undoing
we cannot be undoing
you cannot be undoing
they cannot be undoing

Perfect

I cannot have undone
you cannot have undone
she cannot have undone
we cannot have undone
you cannot have undone
they cannot have undone

V-ing perfect

I cannot have been undoing
you cannot have been undoing
she cannot have been undoing
we cannot have been undoing
you cannot have been undoing
they cannot have been undoing

Interrogative form

Simple form

can I undo?
can you undo?
can she undo?
can we undo?
can you undo?
can they undo?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

can I not undo?
can you not undo?
can she not undo?
can we not undo?
can you not undo?
can they not undo?

V-ing form

can I not be undoing?
can you not be undoing?
can she not be undoing?
can we not be undoing?
can you not be undoing?
can they not be undoing?

Perfect

can I not have undone?
can you not have undone?
can she not have undone?
can we not have undone?
can you not have undone?
can they not have undone?

V-ing perfect

can I not have been undoing?
can you not have been undoing?
can she not have been undoing?
can we not have been undoing?
can you not have been undoing?
can they not have been undoing?

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