English verb conjugation
MUST RIVAL

Regular verb: rival - rivalled - rivalled

Affirmation

Simple form	V-ing form
I must rival you must rival he must rival we must rival you must rival they must rival	I must be rivalling you must be rivalling he must be rivalling we must be rivalling you must be rivalling they must be rivalling
Perfect	V-ing perfect
I must have rivalled you must have rivalled he must have rivalled we must have rivalled you must have rivalled they must have rivalled	I must have been rivalling you must have been rivalling he must have been rivalling we must have been rivalling you must have been rivalling they must have been rivalling

Negation

Simple form	V-ing form
I must not rival you must not rival he must not rival we must not rival you must not rival they must not rival	I must not be rivalling you must not be rivalling he must not be rivalling we must not be rivalling you must not be rivalling they must not be rivalling
Perfect	V-ing perfect
I must not have rivalled you must not have rivalled he must not have rivalled we must not have rivalled you must not have rivalled they must not have rivalled	I must not have been rivalling you must not have been rivalling he must not have been rivalling we must not have been rivalling you must not have been rivalling they must not have been rivalling

Interrogative form

Simple form	V-ing form
must I rival? must you rival? must he rival? must we rival? must you rival? must they rival?	must I be rivalling? must you be rivalling? must he be rivalling? must we be rivalling? must you be rivalling? must they be rivalling?
Perfect	V-ing perfect
must I have rivalled? must you have rivalled? must he have rivalled? must we have rivalled? must you have rivalled? must they have rivalled?	must I have been rivalling? must you have been rivalling? must he have been rivalling? must we have been rivalling? must you have been rivalling? must they have been rivalling?

Interro-negative form

Simple form	V-ing form
must I not rival? must you not rival? must he not rival? must we not rival? must you not rival? must they not rival?	must I not be rivalling? must you not be rivalling? must he not be rivalling? must we not be rivalling? must you not be rivalling? must they not be rivalling?
Perfect	V-ing perfect
must I not have rivalled? must you not have rivalled? must he not have rivalled? must we not have rivalled? must you not have rivalled? must they not have rivalled?	must I not have been rivalling? must you not have been rivalling? must he not have been rivalling? must we not have been rivalling? must you not have been rivalling? must they not have been rivalling?