English verb conjugation CAN UNDULATE

Regular verb: undulate - undulated - undulated

Affirmation

Simple form

I can undulate
you can undulate
he can undulate
we can undulate
you can undulate
they can undulate

V-ing form

I can be undulating
you can be undulating
he can be undulating
we can be undulating
you can be undulating
they can be undulating

Perfect

I can have undulated
you can have undulated
he can have undulated
we can have undulated
you can have undulated
they can have undulated

V-ing perfect

I can have been undulating
you can have been undulating
he can have been undulating
we can have been undulating
you can have been undulating
they can have been undulating

Negation

Simple form

I cannot undulate
you cannot undulate
he cannot undulate
we cannot undulate
you cannot undulate
they cannot undulate

V-ing form

I cannot be undulating
you cannot be undulating
he cannot be undulating
we cannot be undulating
you cannot be undulating
they cannot be undulating

Perfect

I cannot have undulated
you cannot have undulated
he cannot have undulated
we cannot have undulated
you cannot have undulated
they cannot have undulated

V-ing perfect

I cannot have been undulating
you cannot have been undulating
he cannot have been undulating
we cannot have been undulating
you cannot have been undulating
they cannot have been undulating

Interrogative form

Simple form

can I undulate?
can you undulate?
can he undulate?
can we undulate?
can you undulate?
can they undulate?

V-ing form

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

Perfect

can I have undulated?
can you have undulated?
can he have undulated?
can we have undulated?
can you have undulated?
can they have undulated?

V-ing perfect

can I have been undulating?
can you have been undulating?
can he have been undulating?
can we have been undulating?
can you have been undulating?
can they have been undulating?

Interro-negative form

Simple form

can I not undulate?
can you not undulate?
can he not undulate?
can we not undulate?
can you not undulate?
can they not undulate?

V-ing form

can I not be undulating?
can you not be undulating?
can he not be undulating?
can we not be undulating?
can you not be undulating?
can they not be undulating?

Perfect

can I not have undulated?
can you not have undulated?
can he not have undulated?
can we not have undulated?
can you not have undulated?
can they not have undulated?

V-ing perfect

can I not have been undulating?
can you not have been undulating?
can he not have been undulating?
can we not have been undulating?
can you not have been undulating?
can they not have been undulating?

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