ought to cough
Regular verb: cough - coughed- coughed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to cough
you ought to cough
she ought to cough
we ought to cough
you ought to cough
they ought to cough 	I ought to be coughing
you ought to be coughing
she ought to be coughing
we ought to be coughing
you ought to be coughing
they ought to be coughing	I ought to have coughed
you ought to have coughed
she ought to have coughed
we ought to have coughed
you ought to have coughed
they ought to have coughed	I ought to have been coughing
you ought to have been coughing
she ought to have been coughing
we ought to have been coughing
you ought to have been coughing
they ought to have been coughing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to cough
you oughtn't to cough
she oughtn't to cough
we oughtn't to cough
you oughtn't to cough
they oughtn't to cough 	I oughtn't to be coughing
you oughtn't to be coughing
she oughtn't to be coughing
we oughtn't to be coughing
you oughtn't to be coughing
they oughtn't to be coughing	I oughtn't to have coughed
you oughtn't to have coughed
she oughtn't to have coughed
we oughtn't to have coughed
you oughtn't to have coughed
they oughtn't to have coughed	I oughtn't to have been coughing
you oughtn't to have been coughing
she oughtn't to have been coughing
we oughtn't to have been coughing
you oughtn't to have been coughing
they oughtn't to have been coughing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I cough?
ought to you cough?
ought to she cough?
ought to we cough?
ought to you cough?
ought to they cough? 	ought to I be coughing?
ought to you be coughing?
ought to she be coughing?
ought to we be coughing?
ought to you be coughing?
ought to they be coughing? 	ought to I have coughed?
ought to you have coughed?
ought to she have coughed?
ought to we have coughed?
ought to you have coughed?
ought to they have coughed? 	ought to I have been coughing?
ought to you have been coughing?
ought to she have been coughing?
ought to we have been coughing?
ought to you have been coughing?
ought to they have been coughing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to cough?
oughtn't you to cough?
oughtn't she to cough?
oughtn't we to cough?
oughtn't you to cough?
oughtn't they to cough? 	oughtn't I to be coughing?
oughtn't you to be coughing?
oughtn't she to be coughing?
oughtn't we to be coughing?
oughtn't you to be coughing?
oughtn't they to be coughing? 	oughtn't I to have coughed?
oughtn't you to have coughed?
oughtn't she to have coughed?
oughtn't we to have coughed?
oughtn't you to have coughed?
oughtn't they to have coughed? 	oughtn't I to have been coughing?
oughtn't you to have been coughing?
oughtn't she to have been coughing?
oughtn't we to have been coughing?
oughtn't you to have been coughing?
oughtn't they to have been coughing?