English verb conjugation
MUST SKIDOO

Regular verb: skidoo - skidooed - skidooed

Affirmation

Simple form	V-ing form
I must skidoo you must skidoo he must skidoo we must skidoo you must skidoo they must skidoo	I must be skidooing you must be skidooing he must be skidooing we must be skidooing you must be skidooing they must be skidooing
Perfect	V-ing perfect
I must have skidooed you must have skidooed he must have skidooed we must have skidooed you must have skidooed they must have skidooed	I must have been skidooing you must have been skidooing he must have been skidooing we must have been skidooing you must have been skidooing they must have been skidooing

Negation

Simple form	V-ing form
I must not skidoo you must not skidoo he must not skidoo we must not skidoo you must not skidoo they must not skidoo	I must not be skidooing you must not be skidooing he must not be skidooing we must not be skidooing you must not be skidooing they must not be skidooing
Perfect	V-ing perfect
I must not have skidooed you must not have skidooed he must not have skidooed we must not have skidooed you must not have skidooed they must not have skidooed	I must not have been skidooing you must not have been skidooing he must not have been skidooing we must not have been skidooing you must not have been skidooing they must not have been skidooing

Interrogative form

Simple form	V-ing form
must I skidoo? must you skidoo? must he skidoo? must we skidoo? must you skidoo? must they skidoo?	must I be skidooing? must you be skidooing? must he be skidooing? must we be skidooing? must you be skidooing? must they be skidooing?
Perfect	V-ing perfect
must I have skidooed? must you have skidooed? must he have skidooed? must we have skidooed? must you have skidooed? must they have skidooed?	must I have been skidooing? must you have been skidooing? must he have been skidooing? must we have been skidooing? must you have been skidooing? must they have been skidooing?

Interro-negative form

Simple form	V-ing form
must I not skidoo? must you not skidoo? must he not skidoo? must we not skidoo? must you not skidoo? must they not skidoo?	must I not be skidooing? must you not be skidooing? must he not be skidooing? must we not be skidooing? must you not be skidooing? must they not be skidooing?
Perfect	V-ing perfect
must I not have skidooed? must you not have skidooed? must he not have skidooed? must we not have skidooed? must you not have skidooed? must they not have skidooed?	must I not have been skidooing? must you not have been skidooing? must he not have been skidooing? must we not have been skidooing? must you not have been skidooing? must they not have been skidooing?