can vouchsafe
Regular verb: vouchsafe - vouchsafed- vouchsafed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can vouchsafe
you can vouchsafe
he can vouchsafe
we can vouchsafe
you can vouchsafe
they can vouchsafe 	I can be vouchsafing
you can be vouchsafing
he can be vouchsafing
we can be vouchsafing
you can be vouchsafing
they can be vouchsafing	I can have vouchsafed
you can have vouchsafed
he can have vouchsafed
we can have vouchsafed
you can have vouchsafed
they can have vouchsafed	I can have been vouchsafing
you can have been vouchsafing
he can have been vouchsafing
we can have been vouchsafing
you can have been vouchsafing
they can have been vouchsafing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't vouchsafe
you can't vouchsafe
he can't vouchsafe
we can't vouchsafe
you can't vouchsafe
they can't vouchsafe 	I can't be vouchsafing
you can't be vouchsafing
he can't be vouchsafing
we can't be vouchsafing
you can't be vouchsafing
they can't be vouchsafing	I can't have vouchsafed
you can't have vouchsafed
he can't have vouchsafed
we can't have vouchsafed
you can't have vouchsafed
they can't have vouchsafed	I can't have been vouchsafing
you can't have been vouchsafing
he can't have been vouchsafing
we can't have been vouchsafing
you can't have been vouchsafing
they can't have been vouchsafing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I vouchsafe?
can you vouchsafe?
can he vouchsafe?
can we vouchsafe?
can you vouchsafe?
can they vouchsafe? 	can I be vouchsafing?
can you be vouchsafing?
can he be vouchsafing?
can we be vouchsafing?
can you be vouchsafing?
can they be vouchsafing? 	can I have vouchsafed?
can you have vouchsafed?
can he have vouchsafed?
can we have vouchsafed?
can you have vouchsafed?
can they have vouchsafed? 	can I have been vouchsafing?
can you have been vouchsafing?
can he have been vouchsafing?
can we have been vouchsafing?
can you have been vouchsafing?
can they have been vouchsafing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I vouchsafe?
can't you vouchsafe?
can't he vouchsafe?
can't we vouchsafe?
can't you vouchsafe?
can't they vouchsafe? 	can't I be vouchsafing?
can't you be vouchsafing?
can't he be vouchsafing?
can't we be vouchsafing?
can't you be vouchsafing?
can't they be vouchsafing? 	can't I have vouchsafed?
can't you have vouchsafed?
can't he have vouchsafed?
can't we have vouchsafed?
can't you have vouchsafed?
can't they have vouchsafed? 	can't I have been vouchsafing?
can't you have been vouchsafing?
can't he have been vouchsafing?
can't we have been vouchsafing?
can't you have been vouchsafing?
can't they have been vouchsafing?