English verb conjugation
CAN RIVAL

Regular verb: rival - rivalled - rivalled

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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