English verb conjugation CAN CRUMPLE

Regular verb: crumple - crumpled - crumpled

Affirmation

Simple form

I can crumple
you can crumple
he can crumple
we can crumple
you can crumple
they can crumple

V-ing form

I can be crumpling
you can be crumpling
he can be crumpling
we can be crumpling
you can be crumpling
they can be crumpling

Perfect

I can have crumpled
you can have crumpled
he can have crumpled
we can have crumpled
you can have crumpled
they can have crumpled

V-ing perfect

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

Negation

Simple form

I cannot crumple
you cannot crumple
he cannot crumple
we cannot crumple
you cannot crumple
they cannot crumple

V-ing form

I cannot be crumpling
you cannot be crumpling
he cannot be crumpling
we cannot be crumpling
you cannot be crumpling
they cannot be crumpling

Perfect

I cannot have crumpled
you cannot have crumpled
he cannot have crumpled
we cannot have crumpled
you cannot have crumpled
they cannot have crumpled

V-ing perfect

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

Interrogative form

Simple form

can I crumple?
can you crumple?
can he crumple?
can we crumple?
can you crumple?
can they crumple?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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