ought to discern
Regular verb: discern - discerned- discerned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to discern
you ought to discern
he ought to discern
we ought to discern
you ought to discern
they ought to discern 	I ought to be discerning
you ought to be discerning
he ought to be discerning
we ought to be discerning
you ought to be discerning
they ought to be discerning	I ought to have discerned
you ought to have discerned
he ought to have discerned
we ought to have discerned
you ought to have discerned
they ought to have discerned	I ought to have been discerning
you ought to have been discerning
he ought to have been discerning
we ought to have been discerning
you ought to have been discerning
they ought to have been discerning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to discern
you oughtn't to discern
he oughtn't to discern
we oughtn't to discern
you oughtn't to discern
they oughtn't to discern 	I oughtn't to be discerning
you oughtn't to be discerning
he oughtn't to be discerning
we oughtn't to be discerning
you oughtn't to be discerning
they oughtn't to be discerning	I oughtn't to have discerned
you oughtn't to have discerned
he oughtn't to have discerned
we oughtn't to have discerned
you oughtn't to have discerned
they oughtn't to have discerned	I oughtn't to have been discerning
you oughtn't to have been discerning
he oughtn't to have been discerning
we oughtn't to have been discerning
you oughtn't to have been discerning
they oughtn't to have been discerning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I discern?
ought to you discern?
ought to he discern?
ought to we discern?
ought to you discern?
ought to they discern? 	ought to I be discerning?
ought to you be discerning?
ought to he be discerning?
ought to we be discerning?
ought to you be discerning?
ought to they be discerning? 	ought to I have discerned?
ought to you have discerned?
ought to he have discerned?
ought to we have discerned?
ought to you have discerned?
ought to they have discerned? 	ought to I have been discerning?
ought to you have been discerning?
ought to he have been discerning?
ought to we have been discerning?
ought to you have been discerning?
ought to they have been discerning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to discern?
oughtn't you to discern?
oughtn't he to discern?
oughtn't we to discern?
oughtn't you to discern?
oughtn't they to discern? 	oughtn't I to be discerning?
oughtn't you to be discerning?
oughtn't he to be discerning?
oughtn't we to be discerning?
oughtn't you to be discerning?
oughtn't they to be discerning? 	oughtn't I to have discerned?
oughtn't you to have discerned?
oughtn't he to have discerned?
oughtn't we to have discerned?
oughtn't you to have discerned?
oughtn't they to have discerned? 	oughtn't I to have been discerning?
oughtn't you to have been discerning?
oughtn't he to have been discerning?
oughtn't we to have been discerning?
oughtn't you to have been discerning?
oughtn't they to have been discerning?