can rival
Verbo regular: rival - rivalled- rivalled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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	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	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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	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	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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? 	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? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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? 	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?