could vouchsafe
Regular verb: vouchsafe - vouchsafed- vouchsafed

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

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

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

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