can index
Verbo regular: index - indexed- indexed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can index
you can index
she can index
we can index
you can index
they can index 	I can be indexing
you can be indexing
she can be indexing
we can be indexing
you can be indexing
they can be indexing	I can have indexed
you can have indexed
she can have indexed
we can have indexed
you can have indexed
they can have indexed	I can have been indexing
you can have been indexing
she can have been indexing
we can have been indexing
you can have been indexing
they can have been indexing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot index
you cannot index
she cannot index
we cannot index
you cannot index
they cannot index 	I cannot be indexing
you cannot be indexing
she cannot be indexing
we cannot be indexing
you cannot be indexing
they cannot be indexing	I cannot have indexed
you cannot have indexed
she cannot have indexed
we cannot have indexed
you cannot have indexed
they cannot have indexed	I cannot have been indexing
you cannot have been indexing
she cannot have been indexing
we cannot have been indexing
you cannot have been indexing
they cannot have been indexing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I index?
can you index?
can she index?
can we index?
can you index?
can they index? 	can I be indexing?
can you be indexing?
can she be indexing?
can we be indexing?
can you be indexing?
can they be indexing? 	can I have indexed?
can you have indexed?
can she have indexed?
can we have indexed?
can you have indexed?
can they have indexed? 	can I have been indexing?
can you have been indexing?
can she have been indexing?
can we have been indexing?
can you have been indexing?
can they have been indexing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not index?
can you not index?
can she not index?
can we not index?
can you not index?
can they not index? 	can I not be indexing?
can you not be indexing?
can she not be indexing?
can we not be indexing?
can you not be indexing?
can they not be indexing? 	can I not have indexed?
can you not have indexed?
can she not have indexed?
can we not have indexed?
can you not have indexed?
can they not have indexed? 	can I not have been indexing?
can you not have been indexing?
can she not have been indexing?
can we not have been indexing?
can you not have been indexing?
can they not have been indexing?