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 can't rival you can't rival he can't rival we can't rival you can't rival they can't rival	I can't be rivalling you can't be rivalling he can't be rivalling we can't be rivalling you can't be rivalling they can't be rivalling
Perfect	V-ing perfect
I can't have rivalled you can't have rivalled he can't have rivalled we can't have rivalled you can't have rivalled they can't have rivalled	I can't have been rivalling you can't have been rivalling he can't have been rivalling we can't have been rivalling you can't have been rivalling they can't 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't I rival? can't you rival? can't he rival? can't we rival? can't you rival? can't they rival?	can't I be rivalling? can't you be rivalling? can't he be rivalling? can't we be rivalling? can't you be rivalling? can't they be rivalling?
Perfect	V-ing perfect
can't I have rivalled? can't you have rivalled? can't he have rivalled? can't we have rivalled? can't you have rivalled? can't they have rivalled?	can't I have been rivalling? can't you have been rivalling? can't he have been rivalling? can't we have been rivalling? can't you have been rivalling? can't they have been rivalling?