ought to endow
Regular verb: endow - endowed- endowed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to endow
you ought to endow
she ought to endow
we ought to endow
you ought to endow
they ought to endow 	I ought to be endowing
you ought to be endowing
she ought to be endowing
we ought to be endowing
you ought to be endowing
they ought to be endowing	I ought to have endowed
you ought to have endowed
she ought to have endowed
we ought to have endowed
you ought to have endowed
they ought to have endowed	I ought to have been endowing
you ought to have been endowing
she ought to have been endowing
we ought to have been endowing
you ought to have been endowing
they ought to have been endowing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to endow
you oughtn't to endow
she oughtn't to endow
we oughtn't to endow
you oughtn't to endow
they oughtn't to endow 	I oughtn't to be endowing
you oughtn't to be endowing
she oughtn't to be endowing
we oughtn't to be endowing
you oughtn't to be endowing
they oughtn't to be endowing	I oughtn't to have endowed
you oughtn't to have endowed
she oughtn't to have endowed
we oughtn't to have endowed
you oughtn't to have endowed
they oughtn't to have endowed	I oughtn't to have been endowing
you oughtn't to have been endowing
she oughtn't to have been endowing
we oughtn't to have been endowing
you oughtn't to have been endowing
they oughtn't to have been endowing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I endow?
ought to you endow?
ought to she endow?
ought to we endow?
ought to you endow?
ought to they endow? 	ought to I be endowing?
ought to you be endowing?
ought to she be endowing?
ought to we be endowing?
ought to you be endowing?
ought to they be endowing? 	ought to I have endowed?
ought to you have endowed?
ought to she have endowed?
ought to we have endowed?
ought to you have endowed?
ought to they have endowed? 	ought to I have been endowing?
ought to you have been endowing?
ought to she have been endowing?
ought to we have been endowing?
ought to you have been endowing?
ought to they have been endowing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to endow?
oughtn't you to endow?
oughtn't she to endow?
oughtn't we to endow?
oughtn't you to endow?
oughtn't they to endow? 	oughtn't I to be endowing?
oughtn't you to be endowing?
oughtn't she to be endowing?
oughtn't we to be endowing?
oughtn't you to be endowing?
oughtn't they to be endowing? 	oughtn't I to have endowed?
oughtn't you to have endowed?
oughtn't she to have endowed?
oughtn't we to have endowed?
oughtn't you to have endowed?
oughtn't they to have endowed? 	oughtn't I to have been endowing?
oughtn't you to have been endowing?
oughtn't she to have been endowing?
oughtn't we to have been endowing?
oughtn't you to have been endowing?
oughtn't they to have been endowing?