I could pierce you could pierce she could pierce we could pierce you could pierce they could pierce
Forma con V-ing
I could be piercing you could be piercing she could be piercing we could be piercing you could be piercing they could be piercing
Perfecto
I could have pierced you could have pierced she 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 she could have been piercing we could have been piercing you could have been piercing they could have been piercing
Negación
Forma simple
I could not pierce you could not pierce she could not pierce we could not pierce you could not pierce they could not pierce
Forma con V-ing
I could not be piercing you could not be piercing she could not be piercing we could not be piercing you could not be piercing they could not be piercing
Perfecto
I could not have pierced you could not have pierced she could not have pierced we could not have pierced you could not have pierced they could not have pierced
Perfecto con V-ing
I could not have been piercing you could not have been piercing she could not have been piercing we could not have been piercing you could not have been piercing they could not have been piercing
Forma interrogativa
Forma simple
could I pierce? could you pierce? could she pierce? could we pierce? could you pierce? could they pierce?
Forma con V-ing
could I be piercing? could you be piercing? could she be piercing? could we be piercing? could you be piercing? could they be piercing?
Perfecto
could I have pierced? could you have pierced? could she 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 she have been piercing? could we have been piercing? could you have been piercing? could they have been piercing?
Forma interro-negativa
Forma simple
could I not pierce? could you not pierce? could she not pierce? could we not pierce? could you not pierce? could they not pierce?
Forma con V-ing
could I not be piercing? could you not be piercing? could she not be piercing? could we not be piercing? could you not be piercing? could they not be piercing?
Perfecto
could I not have pierced? could you not have pierced? could she not have pierced? could we not have pierced? could you not have pierced? could they not have pierced?
Perfecto con V-ing
could I not have been piercing? could you not have been piercing? could she not have been piercing? could we not have been piercing? could you not have been piercing? could they not have been piercing?