English verb conjugation
COULD UNDERWITHHOLD

Regular verb: underwithhold - underwithholded - underwithholded

Affirmation

Simple form	V-ing form
I could underwithhold you could underwithhold she could underwithhold we could underwithhold you could underwithhold they could underwithhold	I could be underwithholding you could be underwithholding she could be underwithholding we could be underwithholding you could be underwithholding they could be underwithholding
Perfect	V-ing perfect
I could have underwithholded you could have underwithholded she could have underwithholded we could have underwithholded you could have underwithholded they could have underwithholded	I could have been underwithholding you could have been underwithholding she could have been underwithholding we could have been underwithholding you could have been underwithholding they could have been underwithholding

Negation

Simple form	V-ing form
I could not underwithhold you could not underwithhold she could not underwithhold we could not underwithhold you could not underwithhold they could not underwithhold	I could not be underwithholding you could not be underwithholding she could not be underwithholding we could not be underwithholding you could not be underwithholding they could not be underwithholding
Perfect	V-ing perfect
I could not have underwithholded you could not have underwithholded she could not have underwithholded we could not have underwithholded you could not have underwithholded they could not have underwithholded	I could not have been underwithholding you could not have been underwithholding she could not have been underwithholding we could not have been underwithholding you could not have been underwithholding they could not have been underwithholding

Interrogative form

Simple form	V-ing form
could I underwithhold? could you underwithhold? could she underwithhold? could we underwithhold? could you underwithhold? could they underwithhold?	could I be underwithholding? could you be underwithholding? could she be underwithholding? could we be underwithholding? could you be underwithholding? could they be underwithholding?
Perfect	V-ing perfect
could I have underwithholded? could you have underwithholded? could she have underwithholded? could we have underwithholded? could you have underwithholded? could they have underwithholded?	could I have been underwithholding? could you have been underwithholding? could she have been underwithholding? could we have been underwithholding? could you have been underwithholding? could they have been underwithholding?

Interro-negative form

Simple form	V-ing form
could I not underwithhold? could you not underwithhold? could she not underwithhold? could we not underwithhold? could you not underwithhold? could they not underwithhold?	could I not be underwithholding? could you not be underwithholding? could she not be underwithholding? could we not be underwithholding? could you not be underwithholding? could they not be underwithholding?
Perfect	V-ing perfect
could I not have underwithholded? could you not have underwithholded? could she not have underwithholded? could we not have underwithholded? could you not have underwithholded? could they not have underwithholded?	could I not have been underwithholding? could you not have been underwithholding? could she not have been underwithholding? could we not have been underwithholding? could you not have been underwithholding? could they not have been underwithholding?