English verb conjugation
MUST RUE

Regular verb: rue - rued - rued

Affirmation

Simple form	V-ing form
I must rue you must rue he must rue we must rue you must rue they must rue	I must be ruing you must be ruing he must be ruing we must be ruing you must be ruing they must be ruing
Perfect	V-ing perfect
I must have rued you must have rued he must have rued we must have rued you must have rued they must have rued	I must have been ruing you must have been ruing he must have been ruing we must have been ruing you must have been ruing they must have been ruing

Negation

Simple form	V-ing form
I must not rue you must not rue he must not rue we must not rue you must not rue they must not rue	I must not be ruing you must not be ruing he must not be ruing we must not be ruing you must not be ruing they must not be ruing
Perfect	V-ing perfect
I must not have rued you must not have rued he must not have rued we must not have rued you must not have rued they must not have rued	I must not have been ruing you must not have been ruing he must not have been ruing we must not have been ruing you must not have been ruing they must not have been ruing

Interrogative form

Simple form	V-ing form
must I rue? must you rue? must he rue? must we rue? must you rue? must they rue?	must I be ruing? must you be ruing? must he be ruing? must we be ruing? must you be ruing? must they be ruing?
Perfect	V-ing perfect
must I have rued? must you have rued? must he have rued? must we have rued? must you have rued? must they have rued?	must I have been ruing? must you have been ruing? must he have been ruing? must we have been ruing? must you have been ruing? must they have been ruing?

Interro-negative form

Simple form	V-ing form
must I not rue? must you not rue? must he not rue? must we not rue? must you not rue? must they not rue?	must I not be ruing? must you not be ruing? must he not be ruing? must we not be ruing? must you not be ruing? must they not be ruing?
Perfect	V-ing perfect
must I not have rued? must you not have rued? must he not have rued? must we not have rued? must you not have rued? must they not have rued?	must I not have been ruing? must you not have been ruing? must he not have been ruing? must we not have been ruing? must you not have been ruing? must they not have been ruing?