can index
Verbo regular: index - indexed- indexed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can index
you can index
he can index
we can index
you can index
they can index 	I can be indexing
you can be indexing
he can be indexing
we can be indexing
you can be indexing
they can be indexing	I can have indexed
you can have indexed
he 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
he can have been indexing
we can have been indexing
you can have been indexing
they can have been indexing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot index
you cannot index
he cannot index
we cannot index
you cannot index
they cannot index 	I cannot be indexing
you cannot be indexing
he cannot be indexing
we cannot be indexing
you cannot be indexing
they cannot be indexing	I cannot have indexed
you cannot have indexed
he 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
he cannot have been indexing
we cannot have been indexing
you cannot have been indexing
they cannot have been indexing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I index?
can you index?
can he index?
can we index?
can you index?
can they index? 	can I be indexing?
can you be indexing?
can he be indexing?
can we be indexing?
can you be indexing?
can they be indexing? 	can I have indexed?
can you have indexed?
can he 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 he have been indexing?
can we have been indexing?
can you have been indexing?
can they have been indexing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not index?
can you not index?
can he 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 he 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 he 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 he not have been indexing?
can we not have been indexing?
can you not have been indexing?
can they not have been indexing?