English verb conjugation CAN UNDO

Irregular verb: undo - undid - undone

Affirmation

Simple form

I can undo
you can undo
he can undo
we can undo
you can undo
they can undo

V-ing form

I can be undoing
you can be undoing
he can be undoing
we can be undoing
you can be undoing
they can be undoing

Perfect

I can have undone
you can have undone
he 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
he 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
he cannot undo
we cannot undo
you cannot undo
they cannot undo

V-ing form

I cannot be undoing
you cannot be undoing
he cannot be undoing
we cannot be undoing
you cannot be undoing
they cannot be undoing

Perfect

I cannot have undone
you cannot have undone
he 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
he 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 he undo?
can we undo?
can you undo?
can they undo?

V-ing form

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

Perfect

can I have undone?
can you have undone?
can he 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 he 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 he 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 he 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 he 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 he 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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