English verb conjugation CAN STUMBLE

Regular verb: stumble - stumbled - stumbled

Affirmation

Simple form

I can stumble
you can stumble
he can stumble
we can stumble
you can stumble
they can stumble

V-ing form

I can be stumbling
you can be stumbling
he can be stumbling
we can be stumbling
you can be stumbling
they can be stumbling

Perfect

I can have stumbled
you can have stumbled
he can have stumbled
we can have stumbled
you can have stumbled
they can have stumbled

V-ing perfect

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

Negation

Simple form

I can't stumble
you can't stumble
he can't stumble
we can't stumble
you can't stumble
they can't stumble

V-ing form

I can't be stumbling
you can't be stumbling
he can't be stumbling
we can't be stumbling
you can't be stumbling
they can't be stumbling

Perfect

I can't have stumbled
you can't have stumbled
he can't have stumbled
we can't have stumbled
you can't have stumbled
they can't have stumbled

V-ing perfect

I can't have been stumbling
you can't have been stumbling
he can't have been stumbling
we can't have been stumbling
you can't have been stumbling
they can't have been stumbling

Interrogative form

Simple form

can I stumble?
can you stumble?
can he stumble?
can we stumble?
can you stumble?
can they stumble?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

can't I stumble?
can't you stumble?
can't he stumble?
can't we stumble?
can't you stumble?
can't they stumble?

V-ing form

can't I be stumbling?
can't you be stumbling?
can't he be stumbling?
can't we be stumbling?
can't you be stumbling?
can't they be stumbling?

Perfect

can't I have stumbled?
can't you have stumbled?
can't he have stumbled?
can't we have stumbled?
can't you have stumbled?
can't they have stumbled?

V-ing perfect

can't I have been stumbling?
can't you have been stumbling?
can't he have been stumbling?
can't we have been stumbling?
can't you have been stumbling?
can't they have been stumbling?

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