I can preserve you can preserve he can preserve we can preserve you can preserve they can preserve
Forma con V-ing
I can be preserving you can be preserving he can be preserving we can be preserving you can be preserving they can be preserving
Perfecto
I can have preserved you can have preserved he can have preserved we can have preserved you can have preserved they can have preserved
Perfecto con V-ing
I can have been preserving you can have been preserving he can have been preserving we can have been preserving you can have been preserving they can have been preserving
Negación
Forma simple
I can't preserve you can't preserve he can't preserve we can't preserve you can't preserve they can't preserve
Forma con V-ing
I can't be preserving you can't be preserving he can't be preserving we can't be preserving you can't be preserving they can't be preserving
Perfecto
I can't have preserved you can't have preserved he can't have preserved we can't have preserved you can't have preserved they can't have preserved
Perfecto con V-ing
I can't have been preserving you can't have been preserving he can't have been preserving we can't have been preserving you can't have been preserving they can't have been preserving
Forma interrogativa
Forma simple
can I preserve? can you preserve? can he preserve? can we preserve? can you preserve? can they preserve?
Forma con V-ing
can I be preserving? can you be preserving? can he be preserving? can we be preserving? can you be preserving? can they be preserving?
Perfecto
can I have preserved? can you have preserved? can he have preserved? can we have preserved? can you have preserved? can they have preserved?
Perfecto con V-ing
can I have been preserving? can you have been preserving? can he have been preserving? can we have been preserving? can you have been preserving? can they have been preserving?
Forma interro-negativa
Forma simple
can't I preserve? can't you preserve? can't he preserve? can't we preserve? can't you preserve? can't they preserve?
Forma con V-ing
can't I be preserving? can't you be preserving? can't he be preserving? can't we be preserving? can't you be preserving? can't they be preserving?
Perfecto
can't I have preserved? can't you have preserved? can't he have preserved? can't we have preserved? can't you have preserved? can't they have preserved?
Perfecto con V-ing
can't I have been preserving? can't you have been preserving? can't he have been preserving? can't we have been preserving? can't you have been preserving? can't they have been preserving?