English verb conjugation CAN HOWL

Regular verb: howl - howled - howled

Affirmation

Simple form

I can howl
you can howl
she can howl
we can howl
you can howl
they can howl

V-ing form

I can be howling
you can be howling
she can be howling
we can be howling
you can be howling
they can be howling

Perfect

I can have howled
you can have howled
she can have howled
we can have howled
you can have howled
they can have howled

V-ing perfect

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

Negation

Simple form

I cannot howl
you cannot howl
she cannot howl
we cannot howl
you cannot howl
they cannot howl

V-ing form

I cannot be howling
you cannot be howling
she cannot be howling
we cannot be howling
you cannot be howling
they cannot be howling

Perfect

I cannot have howled
you cannot have howled
she cannot have howled
we cannot have howled
you cannot have howled
they cannot have howled

V-ing perfect

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

Interrogative form

Simple form

can I howl?
can you howl?
can she howl?
can we howl?
can you howl?
can they howl?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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