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 couldn't deflate you couldn't deflate he couldn't deflate we couldn't deflate you couldn't deflate they couldn't deflate	I couldn't be deflating you couldn't be deflating he couldn't be deflating we couldn't be deflating you couldn't be deflating they couldn't be deflating
Perfect	V-ing perfect
I couldn't have deflated you couldn't have deflated he couldn't have deflated we couldn't have deflated you couldn't have deflated they couldn't have deflated	I couldn't have been deflating you couldn't have been deflating he couldn't have been deflating we couldn't have been deflating you couldn't have been deflating they couldn't 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
couldn't I deflate? couldn't you deflate? couldn't he deflate? couldn't we deflate? couldn't you deflate? couldn't they deflate?	couldn't I be deflating? couldn't you be deflating? couldn't he be deflating? couldn't we be deflating? couldn't you be deflating? couldn't they be deflating?
Perfect	V-ing perfect
couldn't I have deflated? couldn't you have deflated? couldn't he have deflated? couldn't we have deflated? couldn't you have deflated? couldn't they have deflated?	couldn't I have been deflating? couldn't you have been deflating? couldn't he have been deflating? couldn't we have been deflating? couldn't you have been deflating? couldn't they have been deflating?