I could supple you could supple she could supple we could supple you could supple they could supple
Forma con V-ing
I could be suppling you could be suppling she could be suppling we could be suppling you could be suppling they could be suppling
Perfecto
I could have suppled you could have suppled she could have suppled we could have suppled you could have suppled they could have suppled
Perfecto con V-ing
I could have been suppling you could have been suppling she could have been suppling we could have been suppling you could have been suppling they could have been suppling
Negación
Forma simple
I couldn't supple you couldn't supple she couldn't supple we couldn't supple you couldn't supple they couldn't supple
Forma con V-ing
I couldn't be suppling you couldn't be suppling she couldn't be suppling we couldn't be suppling you couldn't be suppling they couldn't be suppling
Perfecto
I couldn't have suppled you couldn't have suppled she couldn't have suppled we couldn't have suppled you couldn't have suppled they couldn't have suppled
Perfecto con V-ing
I couldn't have been suppling you couldn't have been suppling she couldn't have been suppling we couldn't have been suppling you couldn't have been suppling they couldn't have been suppling
Forma interrogativa
Forma simple
could I supple? could you supple? could she supple? could we supple? could you supple? could they supple?
Forma con V-ing
could I be suppling? could you be suppling? could she be suppling? could we be suppling? could you be suppling? could they be suppling?
Perfecto
could I have suppled? could you have suppled? could she have suppled? could we have suppled? could you have suppled? could they have suppled?
Perfecto con V-ing
could I have been suppling? could you have been suppling? could she have been suppling? could we have been suppling? could you have been suppling? could they have been suppling?
Forma interro-negativa
Forma simple
couldn't I supple? couldn't you supple? couldn't she supple? couldn't we supple? couldn't you supple? couldn't they supple?
Forma con V-ing
couldn't I be suppling? couldn't you be suppling? couldn't she be suppling? couldn't we be suppling? couldn't you be suppling? couldn't they be suppling?
Perfecto
couldn't I have suppled? couldn't you have suppled? couldn't she have suppled? couldn't we have suppled? couldn't you have suppled? couldn't they have suppled?
Perfecto con V-ing
couldn't I have been suppling? couldn't you have been suppling? couldn't she have been suppling? couldn't we have been suppling? couldn't you have been suppling? couldn't they have been suppling?