ought to buttress
Regular verb: buttress - buttressed- buttressed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to buttress
you ought to buttress
she ought to buttress
we ought to buttress
you ought to buttress
they ought to buttress 	I ought to be buttressing
you ought to be buttressing
she ought to be buttressing
we ought to be buttressing
you ought to be buttressing
they ought to be buttressing	I ought to have buttressed
you ought to have buttressed
she ought to have buttressed
we ought to have buttressed
you ought to have buttressed
they ought to have buttressed	I ought to have been buttressing
you ought to have been buttressing
she ought to have been buttressing
we ought to have been buttressing
you ought to have been buttressing
they ought to have been buttressing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to buttress
you oughtn't to buttress
she oughtn't to buttress
we oughtn't to buttress
you oughtn't to buttress
they oughtn't to buttress 	I oughtn't to be buttressing
you oughtn't to be buttressing
she oughtn't to be buttressing
we oughtn't to be buttressing
you oughtn't to be buttressing
they oughtn't to be buttressing	I oughtn't to have buttressed
you oughtn't to have buttressed
she oughtn't to have buttressed
we oughtn't to have buttressed
you oughtn't to have buttressed
they oughtn't to have buttressed	I oughtn't to have been buttressing
you oughtn't to have been buttressing
she oughtn't to have been buttressing
we oughtn't to have been buttressing
you oughtn't to have been buttressing
they oughtn't to have been buttressing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I buttress?
ought to you buttress?
ought to she buttress?
ought to we buttress?
ought to you buttress?
ought to they buttress? 	ought to I be buttressing?
ought to you be buttressing?
ought to she be buttressing?
ought to we be buttressing?
ought to you be buttressing?
ought to they be buttressing? 	ought to I have buttressed?
ought to you have buttressed?
ought to she have buttressed?
ought to we have buttressed?
ought to you have buttressed?
ought to they have buttressed? 	ought to I have been buttressing?
ought to you have been buttressing?
ought to she have been buttressing?
ought to we have been buttressing?
ought to you have been buttressing?
ought to they have been buttressing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to buttress?
oughtn't you to buttress?
oughtn't she to buttress?
oughtn't we to buttress?
oughtn't you to buttress?
oughtn't they to buttress? 	oughtn't I to be buttressing?
oughtn't you to be buttressing?
oughtn't she to be buttressing?
oughtn't we to be buttressing?
oughtn't you to be buttressing?
oughtn't they to be buttressing? 	oughtn't I to have buttressed?
oughtn't you to have buttressed?
oughtn't she to have buttressed?
oughtn't we to have buttressed?
oughtn't you to have buttressed?
oughtn't they to have buttressed? 	oughtn't I to have been buttressing?
oughtn't you to have been buttressing?
oughtn't she to have been buttressing?
oughtn't we to have been buttressing?
oughtn't you to have been buttressing?
oughtn't they to have been buttressing?