ought to dam
Regular verb: dam - dammed- dammed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to dam
you ought to dam
she ought to dam
we ought to dam
you ought to dam
they ought to dam 	I ought to be damming
you ought to be damming
she ought to be damming
we ought to be damming
you ought to be damming
they ought to be damming	I ought to have dammed
you ought to have dammed
she ought to have dammed
we ought to have dammed
you ought to have dammed
they ought to have dammed	I ought to have been damming
you ought to have been damming
she ought to have been damming
we ought to have been damming
you ought to have been damming
they ought to have been damming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to dam
you oughtn't to dam
she oughtn't to dam
we oughtn't to dam
you oughtn't to dam
they oughtn't to dam 	I oughtn't to be damming
you oughtn't to be damming
she oughtn't to be damming
we oughtn't to be damming
you oughtn't to be damming
they oughtn't to be damming	I oughtn't to have dammed
you oughtn't to have dammed
she oughtn't to have dammed
we oughtn't to have dammed
you oughtn't to have dammed
they oughtn't to have dammed	I oughtn't to have been damming
you oughtn't to have been damming
she oughtn't to have been damming
we oughtn't to have been damming
you oughtn't to have been damming
they oughtn't to have been damming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I dam?
ought to you dam?
ought to she dam?
ought to we dam?
ought to you dam?
ought to they dam? 	ought to I be damming?
ought to you be damming?
ought to she be damming?
ought to we be damming?
ought to you be damming?
ought to they be damming? 	ought to I have dammed?
ought to you have dammed?
ought to she have dammed?
ought to we have dammed?
ought to you have dammed?
ought to they have dammed? 	ought to I have been damming?
ought to you have been damming?
ought to she have been damming?
ought to we have been damming?
ought to you have been damming?
ought to they have been damming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to dam?
oughtn't you to dam?
oughtn't she to dam?
oughtn't we to dam?
oughtn't you to dam?
oughtn't they to dam? 	oughtn't I to be damming?
oughtn't you to be damming?
oughtn't she to be damming?
oughtn't we to be damming?
oughtn't you to be damming?
oughtn't they to be damming? 	oughtn't I to have dammed?
oughtn't you to have dammed?
oughtn't she to have dammed?
oughtn't we to have dammed?
oughtn't you to have dammed?
oughtn't they to have dammed? 	oughtn't I to have been damming?
oughtn't you to have been damming?
oughtn't she to have been damming?
oughtn't we to have been damming?
oughtn't you to have been damming?
oughtn't they to have been damming?