I can append you can append he can append we can append you can append they can append
Forma con V-ing
I can be appending you can be appending he can be appending we can be appending you can be appending they can be appending
Perfecto
I can have appended you can have appended he can have appended we can have appended you can have appended they can have appended
Perfecto con V-ing
I can have been appending you can have been appending he can have been appending we can have been appending you can have been appending they can have been appending
Negación
Forma simple
I can't append you can't append he can't append we can't append you can't append they can't append
Forma con V-ing
I can't be appending you can't be appending he can't be appending we can't be appending you can't be appending they can't be appending
Perfecto
I can't have appended you can't have appended he can't have appended we can't have appended you can't have appended they can't have appended
Perfecto con V-ing
I can't have been appending you can't have been appending he can't have been appending we can't have been appending you can't have been appending they can't have been appending
Forma interrogativa
Forma simple
can I append? can you append? can he append? can we append? can you append? can they append?
Forma con V-ing
can I be appending? can you be appending? can he be appending? can we be appending? can you be appending? can they be appending?
Perfecto
can I have appended? can you have appended? can he have appended? can we have appended? can you have appended? can they have appended?
Perfecto con V-ing
can I have been appending? can you have been appending? can he have been appending? can we have been appending? can you have been appending? can they have been appending?
Forma interro-negativa
Forma simple
can't I append? can't you append? can't he append? can't we append? can't you append? can't they append?
Forma con V-ing
can't I be appending? can't you be appending? can't he be appending? can't we be appending? can't you be appending? can't they be appending?
Perfecto
can't I have appended? can't you have appended? can't he have appended? can't we have appended? can't you have appended? can't they have appended?
Perfecto con V-ing
can't I have been appending? can't you have been appending? can't he have been appending? can't we have been appending? can't you have been appending? can't they have been appending?