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