English verb conjugation
COULD DEFLATE

Regular verb: deflate - deflated - deflated

Affirmation

Simple form	V-ing form
I could deflate you could deflate he could deflate we could deflate you could deflate they could deflate	I could be deflating you could be deflating he could be deflating we could be deflating you could be deflating they could be deflating
Perfect	V-ing perfect
I could have deflated you could have deflated he could have deflated we could have deflated you could have deflated they could have deflated	I could have been deflating you could have been deflating he could have been deflating we could have been deflating you could have been deflating they could have been deflating

Negation

Simple form	V-ing form
I could not deflate you could not deflate he could not deflate we could not deflate you could not deflate they could not deflate	I could not be deflating you could not be deflating he could not be deflating we could not be deflating you could not be deflating they could not be deflating
Perfect	V-ing perfect
I could not have deflated you could not have deflated he could not have deflated we could not have deflated you could not have deflated they could not have deflated	I could not have been deflating you could not have been deflating he could not have been deflating we could not have been deflating you could not have been deflating they could not have been deflating

Interrogative form

Simple form	V-ing form
could I deflate? could you deflate? could he deflate? could we deflate? could you deflate? could they deflate?	could I be deflating? could you be deflating? could he be deflating? could we be deflating? could you be deflating? could they be deflating?
Perfect	V-ing perfect
could I have deflated? could you have deflated? could he have deflated? could we have deflated? could you have deflated? could they have deflated?	could I have been deflating? could you have been deflating? could he have been deflating? could we have been deflating? could you have been deflating? could they have been deflating?

Interro-negative form

Simple form	V-ing form
could I not deflate? could you not deflate? could he not deflate? could we not deflate? could you not deflate? could they not deflate?	could I not be deflating? could you not be deflating? could he not be deflating? could we not be deflating? could you not be deflating? could they not be deflating?
Perfect	V-ing perfect
could I not have deflated? could you not have deflated? could he not have deflated? could we not have deflated? could you not have deflated? could they not have deflated?	could I not have been deflating? could you not have been deflating? could he not have been deflating? could we not have been deflating? could you not have been deflating? could they not have been deflating?