ought to double-tongue
Regular verb: double-tongue - double-tongued- double-tongued

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to double-tongue
you ought to double-tongue
he ought to double-tongue
we ought to double-tongue
you ought to double-tongue
they ought to double-tongue 	I ought to be double-tonguing
you ought to be double-tonguing
he ought to be double-tonguing
we ought to be double-tonguing
you ought to be double-tonguing
they ought to be double-tonguing	I ought to have double-tongued
you ought to have double-tongued
he ought to have double-tongued
we ought to have double-tongued
you ought to have double-tongued
they ought to have double-tongued	I ought to have been double-tonguing
you ought to have been double-tonguing
he ought to have been double-tonguing
we ought to have been double-tonguing
you ought to have been double-tonguing
they ought to have been double-tonguing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to double-tongue
you oughtn't to double-tongue
he oughtn't to double-tongue
we oughtn't to double-tongue
you oughtn't to double-tongue
they oughtn't to double-tongue 	I oughtn't to be double-tonguing
you oughtn't to be double-tonguing
he oughtn't to be double-tonguing
we oughtn't to be double-tonguing
you oughtn't to be double-tonguing
they oughtn't to be double-tonguing	I oughtn't to have double-tongued
you oughtn't to have double-tongued
he oughtn't to have double-tongued
we oughtn't to have double-tongued
you oughtn't to have double-tongued
they oughtn't to have double-tongued	I oughtn't to have been double-tonguing
you oughtn't to have been double-tonguing
he oughtn't to have been double-tonguing
we oughtn't to have been double-tonguing
you oughtn't to have been double-tonguing
they oughtn't to have been double-tonguing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I double-tongue?
ought to you double-tongue?
ought to he double-tongue?
ought to we double-tongue?
ought to you double-tongue?
ought to they double-tongue? 	ought to I be double-tonguing?
ought to you be double-tonguing?
ought to he be double-tonguing?
ought to we be double-tonguing?
ought to you be double-tonguing?
ought to they be double-tonguing? 	ought to I have double-tongued?
ought to you have double-tongued?
ought to he have double-tongued?
ought to we have double-tongued?
ought to you have double-tongued?
ought to they have double-tongued? 	ought to I have been double-tonguing?
ought to you have been double-tonguing?
ought to he have been double-tonguing?
ought to we have been double-tonguing?
ought to you have been double-tonguing?
ought to they have been double-tonguing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to double-tongue?
oughtn't you to double-tongue?
oughtn't he to double-tongue?
oughtn't we to double-tongue?
oughtn't you to double-tongue?
oughtn't they to double-tongue? 	oughtn't I to be double-tonguing?
oughtn't you to be double-tonguing?
oughtn't he to be double-tonguing?
oughtn't we to be double-tonguing?
oughtn't you to be double-tonguing?
oughtn't they to be double-tonguing? 	oughtn't I to have double-tongued?
oughtn't you to have double-tongued?
oughtn't he to have double-tongued?
oughtn't we to have double-tongued?
oughtn't you to have double-tongued?
oughtn't they to have double-tongued? 	oughtn't I to have been double-tonguing?
oughtn't you to have been double-tonguing?
oughtn't he to have been double-tonguing?
oughtn't we to have been double-tonguing?
oughtn't you to have been double-tonguing?
oughtn't they to have been double-tonguing?