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