I can index you can index he can index we can index you can index they can index
Forma con V-ing
I can be indexing you can be indexing he can be indexing we can be indexing you can be indexing they can be indexing
Perfecto
I can have indexed you can have indexed he can have indexed we can have indexed you can have indexed they can have indexed
Perfecto con V-ing
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
I can't index you can't index he can't index we can't index you can't index they can't index
Forma con V-ing
I can't be indexing you can't be indexing he can't be indexing we can't be indexing you can't be indexing they can't be indexing
Perfecto
I can't have indexed you can't have indexed he can't have indexed we can't have indexed you can't have indexed they can't have indexed
Perfecto con V-ing
I can't have been indexing you can't have been indexing he can't have been indexing we can't have been indexing you can't have been indexing they can't have been indexing
Forma interrogativa
Forma simple
can I index? can you index? can he index? can we index? can you index? can they index?
Forma con V-ing
can I be indexing? can you be indexing? can he be indexing? can we be indexing? can you be indexing? can they be indexing?
Perfecto
can I have indexed? can you have indexed? can he have indexed? can we have indexed? can you have indexed? can they have indexed?
Perfecto con V-ing
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
can't I index? can't you index? can't he index? can't we index? can't you index? can't they index?
Forma con V-ing
can't I be indexing? can't you be indexing? can't he be indexing? can't we be indexing? can't you be indexing? can't they be indexing?
Perfecto
can't I have indexed? can't you have indexed? can't he have indexed? can't we have indexed? can't you have indexed? can't they have indexed?
Perfecto con V-ing
can't I have been indexing? can't you have been indexing? can't he have been indexing? can't we have been indexing? can't you have been indexing? can't they have been indexing?