ought to refer
Regular verb: refer - referred- referred

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to refer
you ought to refer
she ought to refer
we ought to refer
you ought to refer
they ought to refer 	I ought to be referring
you ought to be referring
she ought to be referring
we ought to be referring
you ought to be referring
they ought to be referring	I ought to have referred
you ought to have referred
she ought to have referred
we ought to have referred
you ought to have referred
they ought to have referred	I ought to have been referring
you ought to have been referring
she ought to have been referring
we ought to have been referring
you ought to have been referring
they ought to have been referring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to refer
you oughtn't to refer
she oughtn't to refer
we oughtn't to refer
you oughtn't to refer
they oughtn't to refer 	I oughtn't to be referring
you oughtn't to be referring
she oughtn't to be referring
we oughtn't to be referring
you oughtn't to be referring
they oughtn't to be referring	I oughtn't to have referred
you oughtn't to have referred
she oughtn't to have referred
we oughtn't to have referred
you oughtn't to have referred
they oughtn't to have referred	I oughtn't to have been referring
you oughtn't to have been referring
she oughtn't to have been referring
we oughtn't to have been referring
you oughtn't to have been referring
they oughtn't to have been referring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I refer?
ought to you refer?
ought to she refer?
ought to we refer?
ought to you refer?
ought to they refer? 	ought to I be referring?
ought to you be referring?
ought to she be referring?
ought to we be referring?
ought to you be referring?
ought to they be referring? 	ought to I have referred?
ought to you have referred?
ought to she have referred?
ought to we have referred?
ought to you have referred?
ought to they have referred? 	ought to I have been referring?
ought to you have been referring?
ought to she have been referring?
ought to we have been referring?
ought to you have been referring?
ought to they have been referring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to refer?
oughtn't you to refer?
oughtn't she to refer?
oughtn't we to refer?
oughtn't you to refer?
oughtn't they to refer? 	oughtn't I to be referring?
oughtn't you to be referring?
oughtn't she to be referring?
oughtn't we to be referring?
oughtn't you to be referring?
oughtn't they to be referring? 	oughtn't I to have referred?
oughtn't you to have referred?
oughtn't she to have referred?
oughtn't we to have referred?
oughtn't you to have referred?
oughtn't they to have referred? 	oughtn't I to have been referring?
oughtn't you to have been referring?
oughtn't she to have been referring?
oughtn't we to have been referring?
oughtn't you to have been referring?
oughtn't they to have been referring?