English verb conjugation
SHOULD RIVAL

Regular verb: rival - rivalled - rivalled

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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