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