can vary
Verbo regular: vary - varied- varied

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can vary
you can vary
she can vary
we can vary
you can vary
they can vary 	I can be varying
you can be varying
she can be varying
we can be varying
you can be varying
they can be varying	I can have varied
you can have varied
she can have varied
we can have varied
you can have varied
they can have varied	I can have been varying
you can have been varying
she can have been varying
we can have been varying
you can have been varying
they can have been varying	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can't vary
you can't vary
she can't vary
we can't vary
you can't vary
they can't vary 	I can't be varying
you can't be varying
she can't be varying
we can't be varying
you can't be varying
they can't be varying	I can't have varied
you can't have varied
she can't have varied
we can't have varied
you can't have varied
they can't have varied	I can't have been varying
you can't have been varying
she can't have been varying
we can't have been varying
you can't have been varying
they can't have been varying	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I vary?
can you vary?
can she vary?
can we vary?
can you vary?
can they vary? 	can I be varying?
can you be varying?
can she be varying?
can we be varying?
can you be varying?
can they be varying? 	can I have varied?
can you have varied?
can she have varied?
can we have varied?
can you have varied?
can they have varied? 	can I have been varying?
can you have been varying?
can she have been varying?
can we have been varying?
can you have been varying?
can they have been varying? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can't I vary?
can't you vary?
can't she vary?
can't we vary?
can't you vary?
can't they vary? 	can't I be varying?
can't you be varying?
can't she be varying?
can't we be varying?
can't you be varying?
can't they be varying? 	can't I have varied?
can't you have varied?
can't she have varied?
can't we have varied?
can't you have varied?
can't they have varied? 	can't I have been varying?
can't you have been varying?
can't she have been varying?
can't we have been varying?
can't you have been varying?
can't they have been varying?