English verb conjugation
OUGHT TO PERFUSE

Regular verb: perfuse - perfused - perfused

Affirmation

Simple form	V-ing form
I ought to perfuse you ought to perfuse she ought to perfuse we ought to perfuse you ought to perfuse they ought to perfuse	I ought to be perfusing you ought to be perfusing she ought to be perfusing we ought to be perfusing you ought to be perfusing they ought to be perfusing
Perfect	V-ing perfect
I ought to have perfused you ought to have perfused she ought to have perfused we ought to have perfused you ought to have perfused they ought to have perfused	I ought to have been perfusing you ought to have been perfusing she ought to have been perfusing we ought to have been perfusing you ought to have been perfusing they ought to have been perfusing

Negation

Simple form	V-ing form
I oughtn't to perfuse you oughtn't to perfuse she oughtn't to perfuse we oughtn't to perfuse you oughtn't to perfuse they oughtn't to perfuse	I oughtn't to be perfusing you oughtn't to be perfusing she oughtn't to be perfusing we oughtn't to be perfusing you oughtn't to be perfusing they oughtn't to be perfusing
Perfect	V-ing perfect
I oughtn't to have perfused you oughtn't to have perfused she oughtn't to have perfused we oughtn't to have perfused you oughtn't to have perfused they oughtn't to have perfused	I oughtn't to have been perfusing you oughtn't to have been perfusing she oughtn't to have been perfusing we oughtn't to have been perfusing you oughtn't to have been perfusing they oughtn't to have been perfusing

Interrogative form

Simple form	V-ing form
ought to I perfuse? ought to you perfuse? ought to she perfuse? ought to we perfuse? ought to you perfuse? ought to they perfuse?	ought to I be perfusing? ought to you be perfusing? ought to she be perfusing? ought to we be perfusing? ought to you be perfusing? ought to they be perfusing?
Perfect	V-ing perfect
ought to I have perfused? ought to you have perfused? ought to she have perfused? ought to we have perfused? ought to you have perfused? ought to they have perfused?	ought to I have been perfusing? ought to you have been perfusing? ought to she have been perfusing? ought to we have been perfusing? ought to you have been perfusing? ought to they have been perfusing?

Interro-negative form

Simple form	V-ing form
oughtn't I to perfuse? oughtn't you to perfuse? oughtn't she to perfuse? oughtn't we to perfuse? oughtn't you to perfuse? oughtn't they to perfuse?	oughtn't I to be perfusing? oughtn't you to be perfusing? oughtn't she to be perfusing? oughtn't we to be perfusing? oughtn't you to be perfusing? oughtn't they to be perfusing?
Perfect	V-ing perfect
oughtn't I to have perfused? oughtn't you to have perfused? oughtn't she to have perfused? oughtn't we to have perfused? oughtn't you to have perfused? oughtn't they to have perfused?	oughtn't I to have been perfusing? oughtn't you to have been perfusing? oughtn't she to have been perfusing? oughtn't we to have been perfusing? oughtn't you to have been perfusing? oughtn't they to have been perfusing?