could withhold
Irregular verb: withhold - withheld- withheld

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could withhold
you could withhold
he could withhold
we could withhold
you could withhold
they could withhold 	I could be withholding
you could be withholding
he could be withholding
we could be withholding
you could be withholding
they could be withholding	I could have withheld
you could have withheld
he could have withheld
we could have withheld
you could have withheld
they could have withheld	I could have been withholding
you could have been withholding
he could have been withholding
we could have been withholding
you could have been withholding
they could have been withholding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not withhold
you could not withhold
he could not withhold
we could not withhold
you could not withhold
they could not withhold 	I could not be withholding
you could not be withholding
he could not be withholding
we could not be withholding
you could not be withholding
they could not be withholding	I could not have withheld
you could not have withheld
he could not have withheld
we could not have withheld
you could not have withheld
they could not have withheld	I could not have been withholding
you could not have been withholding
he could not have been withholding
we could not have been withholding
you could not have been withholding
they could not have been withholding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I withhold?
could you withhold?
could he withhold?
could we withhold?
could you withhold?
could they withhold? 	could I be withholding?
could you be withholding?
could he be withholding?
could we be withholding?
could you be withholding?
could they be withholding? 	could I have withheld?
could you have withheld?
could he have withheld?
could we have withheld?
could you have withheld?
could they have withheld? 	could I have been withholding?
could you have been withholding?
could he have been withholding?
could we have been withholding?
could you have been withholding?
could they have been withholding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not withhold?
could you not withhold?
could he not withhold?
could we not withhold?
could you not withhold?
could they not withhold? 	could I not be withholding?
could you not be withholding?
could he not be withholding?
could we not be withholding?
could you not be withholding?
could they not be withholding? 	could I not have withheld?
could you not have withheld?
could he not have withheld?
could we not have withheld?
could you not have withheld?
could they not have withheld? 	could I not have been withholding?
could you not have been withholding?
could he not have been withholding?
could we not have been withholding?
could you not have been withholding?
could they not have been withholding?