Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I ought to uderstate sth you ought to uderstate sth he ought to uderstate sth we ought to uderstate sth you ought to uderstate sth they ought to uderstate sth
V-ing form
I ought to be uderstate sthing you ought to be uderstate sthing he ought to be uderstate sthing we ought to be uderstate sthing you ought to be uderstate sthing they ought to be uderstate sthing
Perfect
I ought to have uderstate sthed you ought to have uderstate sthed he ought to have uderstate sthed we ought to have uderstate sthed you ought to have uderstate sthed they ought to have uderstate sthed
V-ing perfect
I ought to have been uderstate sthing you ought to have been uderstate sthing he ought to have been uderstate sthing we ought to have been uderstate sthing you ought to have been uderstate sthing they ought to have been uderstate sthing
Negation
Simple form
I oughtn't to uderstate sth you oughtn't to uderstate sth he oughtn't to uderstate sth we oughtn't to uderstate sth you oughtn't to uderstate sth they oughtn't to uderstate sth
V-ing form
I oughtn't to be uderstate sthing you oughtn't to be uderstate sthing he oughtn't to be uderstate sthing we oughtn't to be uderstate sthing you oughtn't to be uderstate sthing they oughtn't to be uderstate sthing
Perfect
I oughtn't to have uderstate sthed you oughtn't to have uderstate sthed he oughtn't to have uderstate sthed we oughtn't to have uderstate sthed you oughtn't to have uderstate sthed they oughtn't to have uderstate sthed
V-ing perfect
I oughtn't to have been uderstate sthing you oughtn't to have been uderstate sthing he oughtn't to have been uderstate sthing we oughtn't to have been uderstate sthing you oughtn't to have been uderstate sthing they oughtn't to have been uderstate sthing
Interrogative form
Simple form
ought to I uderstate sth? ought to you uderstate sth? ought to he uderstate sth? ought to we uderstate sth? ought to you uderstate sth? ought to they uderstate sth?
V-ing form
ought to I be uderstate sthing? ought to you be uderstate sthing? ought to he be uderstate sthing? ought to we be uderstate sthing? ought to you be uderstate sthing? ought to they be uderstate sthing?
Perfect
ought to I have uderstate sthed? ought to you have uderstate sthed? ought to he have uderstate sthed? ought to we have uderstate sthed? ought to you have uderstate sthed? ought to they have uderstate sthed?
V-ing perfect
ought to I have been uderstate sthing? ought to you have been uderstate sthing? ought to he have been uderstate sthing? ought to we have been uderstate sthing? ought to you have been uderstate sthing? ought to they have been uderstate sthing?
Interro-negative form
Simple form
oughtn't I to uderstate sth? oughtn't you to uderstate sth? oughtn't he to uderstate sth? oughtn't we to uderstate sth? oughtn't you to uderstate sth? oughtn't they to uderstate sth?
V-ing form
oughtn't I to be uderstate sthing? oughtn't you to be uderstate sthing? oughtn't he to be uderstate sthing? oughtn't we to be uderstate sthing? oughtn't you to be uderstate sthing? oughtn't they to be uderstate sthing?
Perfect
oughtn't I to have uderstate sthed? oughtn't you to have uderstate sthed? oughtn't he to have uderstate sthed? oughtn't we to have uderstate sthed? oughtn't you to have uderstate sthed? oughtn't they to have uderstate sthed?
V-ing perfect
oughtn't I to have been uderstate sthing? oughtn't you to have been uderstate sthing? oughtn't he to have been uderstate sthing? oughtn't we to have been uderstate sthing? oughtn't you to have been uderstate sthing? oughtn't they to have been uderstate sthing?