can underwithhold
Regular verb: underwithhold - underwithholded- underwithholded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can underwithhold
you can underwithhold
he can underwithhold
we can underwithhold
you can underwithhold
they can underwithhold 	I can be underwithholding
you can be underwithholding
he can be underwithholding
we can be underwithholding
you can be underwithholding
they can be underwithholding	I can have underwithholded
you can have underwithholded
he can have underwithholded
we can have underwithholded
you can have underwithholded
they can have underwithholded	I can have been underwithholding
you can have been underwithholding
he can have been underwithholding
we can have been underwithholding
you can have been underwithholding
they can have been underwithholding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't underwithhold
you can't underwithhold
he can't underwithhold
we can't underwithhold
you can't underwithhold
they can't underwithhold 	I can't be underwithholding
you can't be underwithholding
he can't be underwithholding
we can't be underwithholding
you can't be underwithholding
they can't be underwithholding	I can't have underwithholded
you can't have underwithholded
he can't have underwithholded
we can't have underwithholded
you can't have underwithholded
they can't have underwithholded	I can't have been underwithholding
you can't have been underwithholding
he can't have been underwithholding
we can't have been underwithholding
you can't have been underwithholding
they can't have been underwithholding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I underwithhold?
can you underwithhold?
can he underwithhold?
can we underwithhold?
can you underwithhold?
can they underwithhold? 	can I be underwithholding?
can you be underwithholding?
can he be underwithholding?
can we be underwithholding?
can you be underwithholding?
can they be underwithholding? 	can I have underwithholded?
can you have underwithholded?
can he have underwithholded?
can we have underwithholded?
can you have underwithholded?
can they have underwithholded? 	can I have been underwithholding?
can you have been underwithholding?
can he have been underwithholding?
can we have been underwithholding?
can you have been underwithholding?
can they have been underwithholding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I underwithhold?
can't you underwithhold?
can't he underwithhold?
can't we underwithhold?
can't you underwithhold?
can't they underwithhold? 	can't I be underwithholding?
can't you be underwithholding?
can't he be underwithholding?
can't we be underwithholding?
can't you be underwithholding?
can't they be underwithholding? 	can't I have underwithholded?
can't you have underwithholded?
can't he have underwithholded?
can't we have underwithholded?
can't you have underwithholded?
can't they have underwithholded? 	can't I have been underwithholding?
can't you have been underwithholding?
can't he have been underwithholding?
can't we have been underwithholding?
can't you have been underwithholding?
can't they have been underwithholding?