English verb conjugation
COULD CREW

Regular verb: crew - crewed - crewed

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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