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