English verb conjugation
COULD RUBBER-STAMP

Regular verb: rubber-stamp - rubber-stamped - rubber-stamped

Affirmation

Simple form	V-ing form
I could rubber-stamp you could rubber-stamp he could rubber-stamp we could rubber-stamp you could rubber-stamp they could rubber-stamp	I could be rubber-stamping you could be rubber-stamping he could be rubber-stamping we could be rubber-stamping you could be rubber-stamping they could be rubber-stamping
Perfect	V-ing perfect
I could have rubber-stamped you could have rubber-stamped he could have rubber-stamped we could have rubber-stamped you could have rubber-stamped they could have rubber-stamped	I could have been rubber-stamping you could have been rubber-stamping he could have been rubber-stamping we could have been rubber-stamping you could have been rubber-stamping they could have been rubber-stamping

Negation

Simple form	V-ing form
I could not rubber-stamp you could not rubber-stamp he could not rubber-stamp we could not rubber-stamp you could not rubber-stamp they could not rubber-stamp	I could not be rubber-stamping you could not be rubber-stamping he could not be rubber-stamping we could not be rubber-stamping you could not be rubber-stamping they could not be rubber-stamping
Perfect	V-ing perfect
I could not have rubber-stamped you could not have rubber-stamped he could not have rubber-stamped we could not have rubber-stamped you could not have rubber-stamped they could not have rubber-stamped	I could not have been rubber-stamping you could not have been rubber-stamping he could not have been rubber-stamping we could not have been rubber-stamping you could not have been rubber-stamping they could not have been rubber-stamping

Interrogative form

Simple form	V-ing form
could I rubber-stamp? could you rubber-stamp? could he rubber-stamp? could we rubber-stamp? could you rubber-stamp? could they rubber-stamp?	could I be rubber-stamping? could you be rubber-stamping? could he be rubber-stamping? could we be rubber-stamping? could you be rubber-stamping? could they be rubber-stamping?
Perfect	V-ing perfect
could I have rubber-stamped? could you have rubber-stamped? could he have rubber-stamped? could we have rubber-stamped? could you have rubber-stamped? could they have rubber-stamped?	could I have been rubber-stamping? could you have been rubber-stamping? could he have been rubber-stamping? could we have been rubber-stamping? could you have been rubber-stamping? could they have been rubber-stamping?

Interro-negative form

Simple form	V-ing form
could I not rubber-stamp? could you not rubber-stamp? could he not rubber-stamp? could we not rubber-stamp? could you not rubber-stamp? could they not rubber-stamp?	could I not be rubber-stamping? could you not be rubber-stamping? could he not be rubber-stamping? could we not be rubber-stamping? could you not be rubber-stamping? could they not be rubber-stamping?
Perfect	V-ing perfect
could I not have rubber-stamped? could you not have rubber-stamped? could he not have rubber-stamped? could we not have rubber-stamped? could you not have rubber-stamped? could they not have rubber-stamped?	could I not have been rubber-stamping? could you not have been rubber-stamping? could he not have been rubber-stamping? could we not have been rubber-stamping? could you not have been rubber-stamping? could they not have been rubber-stamping?