should rival
Regular verb: rival - rivalled- rivalled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?