I can darken you can darken he can darken we can darken you can darken they can darken
Forma con V-ing
I can be darkening you can be darkening he can be darkening we can be darkening you can be darkening they can be darkening
Perfecto
I can have darkened you can have darkened he can have darkened we can have darkened you can have darkened they can have darkened
Perfecto con V-ing
I can have been darkening you can have been darkening he can have been darkening we can have been darkening you can have been darkening they can have been darkening
Negación
Forma simple
I can't darken you can't darken he can't darken we can't darken you can't darken they can't darken
Forma con V-ing
I can't be darkening you can't be darkening he can't be darkening we can't be darkening you can't be darkening they can't be darkening
Perfecto
I can't have darkened you can't have darkened he can't have darkened we can't have darkened you can't have darkened they can't have darkened
Perfecto con V-ing
I can't have been darkening you can't have been darkening he can't have been darkening we can't have been darkening you can't have been darkening they can't have been darkening
Forma interrogativa
Forma simple
can I darken? can you darken? can he darken? can we darken? can you darken? can they darken?
Forma con V-ing
can I be darkening? can you be darkening? can he be darkening? can we be darkening? can you be darkening? can they be darkening?
Perfecto
can I have darkened? can you have darkened? can he have darkened? can we have darkened? can you have darkened? can they have darkened?
Perfecto con V-ing
can I have been darkening? can you have been darkening? can he have been darkening? can we have been darkening? can you have been darkening? can they have been darkening?
Forma interro-negativa
Forma simple
can't I darken? can't you darken? can't he darken? can't we darken? can't you darken? can't they darken?
Forma con V-ing
can't I be darkening? can't you be darkening? can't he be darkening? can't we be darkening? can't you be darkening? can't they be darkening?
Perfecto
can't I have darkened? can't you have darkened? can't he have darkened? can't we have darkened? can't you have darkened? can't they have darkened?
Perfecto con V-ing
can't I have been darkening? can't you have been darkening? can't he have been darkening? can't we have been darkening? can't you have been darkening? can't they have been darkening?