ought to toughen
Regular verb: toughen - toughened- toughened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to toughen
you ought to toughen
she ought to toughen
we ought to toughen
you ought to toughen
they ought to toughen 	I ought to be toughening
you ought to be toughening
she ought to be toughening
we ought to be toughening
you ought to be toughening
they ought to be toughening	I ought to have toughened
you ought to have toughened
she ought to have toughened
we ought to have toughened
you ought to have toughened
they ought to have toughened	I ought to have been toughening
you ought to have been toughening
she ought to have been toughening
we ought to have been toughening
you ought to have been toughening
they ought to have been toughening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to toughen
you oughtn't to toughen
she oughtn't to toughen
we oughtn't to toughen
you oughtn't to toughen
they oughtn't to toughen 	I oughtn't to be toughening
you oughtn't to be toughening
she oughtn't to be toughening
we oughtn't to be toughening
you oughtn't to be toughening
they oughtn't to be toughening	I oughtn't to have toughened
you oughtn't to have toughened
she oughtn't to have toughened
we oughtn't to have toughened
you oughtn't to have toughened
they oughtn't to have toughened	I oughtn't to have been toughening
you oughtn't to have been toughening
she oughtn't to have been toughening
we oughtn't to have been toughening
you oughtn't to have been toughening
they oughtn't to have been toughening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I toughen?
ought to you toughen?
ought to she toughen?
ought to we toughen?
ought to you toughen?
ought to they toughen? 	ought to I be toughening?
ought to you be toughening?
ought to she be toughening?
ought to we be toughening?
ought to you be toughening?
ought to they be toughening? 	ought to I have toughened?
ought to you have toughened?
ought to she have toughened?
ought to we have toughened?
ought to you have toughened?
ought to they have toughened? 	ought to I have been toughening?
ought to you have been toughening?
ought to she have been toughening?
ought to we have been toughening?
ought to you have been toughening?
ought to they have been toughening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to toughen?
oughtn't you to toughen?
oughtn't she to toughen?
oughtn't we to toughen?
oughtn't you to toughen?
oughtn't they to toughen? 	oughtn't I to be toughening?
oughtn't you to be toughening?
oughtn't she to be toughening?
oughtn't we to be toughening?
oughtn't you to be toughening?
oughtn't they to be toughening? 	oughtn't I to have toughened?
oughtn't you to have toughened?
oughtn't she to have toughened?
oughtn't we to have toughened?
oughtn't you to have toughened?
oughtn't they to have toughened? 	oughtn't I to have been toughening?
oughtn't you to have been toughening?
oughtn't she to have been toughening?
oughtn't we to have been toughening?
oughtn't you to have been toughening?
oughtn't they to have been toughening?