English verb conjugation
MUST SHAMPOO

Regular verb: shampoo - shampooed - shampooed

Affirmation

Simple form	V-ing form
I must shampoo you must shampoo he must shampoo we must shampoo you must shampoo they must shampoo	I must be shampooing you must be shampooing he must be shampooing we must be shampooing you must be shampooing they must be shampooing
Perfect	V-ing perfect
I must have shampooed you must have shampooed he must have shampooed we must have shampooed you must have shampooed they must have shampooed	I must have been shampooing you must have been shampooing he must have been shampooing we must have been shampooing you must have been shampooing they must have been shampooing

Negation

Simple form	V-ing form
I must not shampoo you must not shampoo he must not shampoo we must not shampoo you must not shampoo they must not shampoo	I must not be shampooing you must not be shampooing he must not be shampooing we must not be shampooing you must not be shampooing they must not be shampooing
Perfect	V-ing perfect
I must not have shampooed you must not have shampooed he must not have shampooed we must not have shampooed you must not have shampooed they must not have shampooed	I must not have been shampooing you must not have been shampooing he must not have been shampooing we must not have been shampooing you must not have been shampooing they must not have been shampooing

Interrogative form

Simple form	V-ing form
must I shampoo? must you shampoo? must he shampoo? must we shampoo? must you shampoo? must they shampoo?	must I be shampooing? must you be shampooing? must he be shampooing? must we be shampooing? must you be shampooing? must they be shampooing?
Perfect	V-ing perfect
must I have shampooed? must you have shampooed? must he have shampooed? must we have shampooed? must you have shampooed? must they have shampooed?	must I have been shampooing? must you have been shampooing? must he have been shampooing? must we have been shampooing? must you have been shampooing? must they have been shampooing?

Interro-negative form

Simple form	V-ing form
must I not shampoo? must you not shampoo? must he not shampoo? must we not shampoo? must you not shampoo? must they not shampoo?	must I not be shampooing? must you not be shampooing? must he not be shampooing? must we not be shampooing? must you not be shampooing? must they not be shampooing?
Perfect	V-ing perfect
must I not have shampooed? must you not have shampooed? must he not have shampooed? must we not have shampooed? must you not have shampooed? must they not have shampooed?	must I not have been shampooing? must you not have been shampooing? must he not have been shampooing? must we not have been shampooing? must you not have been shampooing? must they not have been shampooing?