English verb conjugation
CAN CREW

Regular verb: crew - crewed - crewed

Affirmation

Simple form	V-ing form
I can crew you can crew he can crew we can crew you can crew they can crew	I can be crewing you can be crewing he can be crewing we can be crewing you can be crewing they can be crewing
Perfect	V-ing perfect
I can have crewed you can have crewed he can have crewed we can have crewed you can have crewed they can have crewed	I can have been crewing you can have been crewing he can have been crewing we can have been crewing you can have been crewing they can have been crewing

Negation

Simple form	V-ing form
I can't crew you can't crew he can't crew we can't crew you can't crew they can't crew	I can't be crewing you can't be crewing he can't be crewing we can't be crewing you can't be crewing they can't be crewing
Perfect	V-ing perfect
I can't have crewed you can't have crewed he can't have crewed we can't have crewed you can't have crewed they can't have crewed	I can't have been crewing you can't have been crewing he can't have been crewing we can't have been crewing you can't have been crewing they can't have been crewing

Interrogative form

Simple form	V-ing form
can I crew? can you crew? can he crew? can we crew? can you crew? can they crew?	can I be crewing? can you be crewing? can he be crewing? can we be crewing? can you be crewing? can they be crewing?
Perfect	V-ing perfect
can I have crewed? can you have crewed? can he have crewed? can we have crewed? can you have crewed? can they have crewed?	can I have been crewing? can you have been crewing? can he have been crewing? can we have been crewing? can you have been crewing? can they have been crewing?

Interro-negative form

Simple form	V-ing form
can't I crew? can't you crew? can't he crew? can't we crew? can't you crew? can't they crew?	can't I be crewing? can't you be crewing? can't he be crewing? can't we be crewing? can't you be crewing? can't they be crewing?
Perfect	V-ing perfect
can't I have crewed? can't you have crewed? can't he have crewed? can't we have crewed? can't you have crewed? can't they have crewed?	can't I have been crewing? can't you have been crewing? can't he have been crewing? can't we have been crewing? can't you have been crewing? can't they have been crewing?