could rival
Verbo regolare: rival - rivalled- rivalled

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could rival
you could rival
he could rival
we could rival
you could rival
they could rival 	I could be rivalling
you could be rivalling
he could be rivalling
we could be rivalling
you could be rivalling
they could be rivalling	I could have rivalled
you could have rivalled
he could have rivalled
we could have rivalled
you could have rivalled
they could have rivalled	I could have been rivalling
you could have been rivalling
he could have been rivalling
we could have been rivalling
you could have been rivalling
they could have been rivalling	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I couldn't rival
you couldn't rival
he couldn't rival
we couldn't rival
you couldn't rival
they couldn't rival 	I couldn't be rivalling
you couldn't be rivalling
he couldn't be rivalling
we couldn't be rivalling
you couldn't be rivalling
they couldn't be rivalling	I couldn't have rivalled
you couldn't have rivalled
he couldn't have rivalled
we couldn't have rivalled
you couldn't have rivalled
they couldn't have rivalled	I couldn't have been rivalling
you couldn't have been rivalling
he couldn't have been rivalling
we couldn't have been rivalling
you couldn't have been rivalling
they couldn't have been rivalling	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I rival?
could you rival?
could he rival?
could we rival?
could you rival?
could they rival? 	could I be rivalling?
could you be rivalling?
could he be rivalling?
could we be rivalling?
could you be rivalling?
could they be rivalling? 	could I have rivalled?
could you have rivalled?
could he have rivalled?
could we have rivalled?
could you have rivalled?
could they have rivalled? 	could I have been rivalling?
could you have been rivalling?
could he have been rivalling?
could we have been rivalling?
could you have been rivalling?
could they have been rivalling? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
couldn't I rival?
couldn't you rival?
couldn't he rival?
couldn't we rival?
couldn't you rival?
couldn't they rival? 	couldn't I be rivalling?
couldn't you be rivalling?
couldn't he be rivalling?
couldn't we be rivalling?
couldn't you be rivalling?
couldn't they be rivalling? 	couldn't I have rivalled?
couldn't you have rivalled?
couldn't he have rivalled?
couldn't we have rivalled?
couldn't you have rivalled?
couldn't they have rivalled? 	couldn't I have been rivalling?
couldn't you have been rivalling?
couldn't he have been rivalling?
couldn't we have been rivalling?
couldn't you have been rivalling?
couldn't they have been rivalling?