I could stanch you could stanch he could stanch we could stanch you could stanch they could stanch
Forma con V-ing
I could be stanching you could be stanching he could be stanching we could be stanching you could be stanching they could be stanching
Perfecto
I could have stanched you could have stanched he could have stanched we could have stanched you could have stanched they could have stanched
Perfecto con V-ing
I could have been stanching you could have been stanching he could have been stanching we could have been stanching you could have been stanching they could have been stanching
Negación
Forma simple
I couldn't stanch you couldn't stanch he couldn't stanch we couldn't stanch you couldn't stanch they couldn't stanch
Forma con V-ing
I couldn't be stanching you couldn't be stanching he couldn't be stanching we couldn't be stanching you couldn't be stanching they couldn't be stanching
Perfecto
I couldn't have stanched you couldn't have stanched he couldn't have stanched we couldn't have stanched you couldn't have stanched they couldn't have stanched
Perfecto con V-ing
I couldn't have been stanching you couldn't have been stanching he couldn't have been stanching we couldn't have been stanching you couldn't have been stanching they couldn't have been stanching
Forma interrogativa
Forma simple
could I stanch? could you stanch? could he stanch? could we stanch? could you stanch? could they stanch?
Forma con V-ing
could I be stanching? could you be stanching? could he be stanching? could we be stanching? could you be stanching? could they be stanching?
Perfecto
could I have stanched? could you have stanched? could he have stanched? could we have stanched? could you have stanched? could they have stanched?
Perfecto con V-ing
could I have been stanching? could you have been stanching? could he have been stanching? could we have been stanching? could you have been stanching? could they have been stanching?
Forma interro-negativa
Forma simple
couldn't I stanch? couldn't you stanch? couldn't he stanch? couldn't we stanch? couldn't you stanch? couldn't they stanch?
Forma con V-ing
couldn't I be stanching? couldn't you be stanching? couldn't he be stanching? couldn't we be stanching? couldn't you be stanching? couldn't they be stanching?
Perfecto
couldn't I have stanched? couldn't you have stanched? couldn't he have stanched? couldn't we have stanched? couldn't you have stanched? couldn't they have stanched?
Perfecto con V-ing
couldn't I have been stanching? couldn't you have been stanching? couldn't he have been stanching? couldn't we have been stanching? couldn't you have been stanching? couldn't they have been stanching?