English verb conjugation
COULD COMPRESS

Regular verb: compress - compressed - compressed

Affirmation

Simple form	V-ing form
I could compress you could compress he could compress we could compress you could compress they could compress	I could be compressing you could be compressing he could be compressing we could be compressing you could be compressing they could be compressing
Perfect	V-ing perfect
I could have compressed you could have compressed he could have compressed we could have compressed you could have compressed they could have compressed	I could have been compressing you could have been compressing he could have been compressing we could have been compressing you could have been compressing they could have been compressing

Negation

Simple form	V-ing form
I could not compress you could not compress he could not compress we could not compress you could not compress they could not compress	I could not be compressing you could not be compressing he could not be compressing we could not be compressing you could not be compressing they could not be compressing
Perfect	V-ing perfect
I could not have compressed you could not have compressed he could not have compressed we could not have compressed you could not have compressed they could not have compressed	I could not have been compressing you could not have been compressing he could not have been compressing we could not have been compressing you could not have been compressing they could not have been compressing

Interrogative form

Simple form	V-ing form
could I compress? could you compress? could he compress? could we compress? could you compress? could they compress?	could I be compressing? could you be compressing? could he be compressing? could we be compressing? could you be compressing? could they be compressing?
Perfect	V-ing perfect
could I have compressed? could you have compressed? could he have compressed? could we have compressed? could you have compressed? could they have compressed?	could I have been compressing? could you have been compressing? could he have been compressing? could we have been compressing? could you have been compressing? could they have been compressing?

Interro-negative form

Simple form	V-ing form
could I not compress? could you not compress? could he not compress? could we not compress? could you not compress? could they not compress?	could I not be compressing? could you not be compressing? could he not be compressing? could we not be compressing? could you not be compressing? could they not be compressing?
Perfect	V-ing perfect
could I not have compressed? could you not have compressed? could he not have compressed? could we not have compressed? could you not have compressed? could they not have compressed?	could I not have been compressing? could you not have been compressing? could he not have been compressing? could we not have been compressing? could you not have been compressing? could they not have been compressing?