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

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?