I could butylate you could butylate she could butylate we could butylate you could butylate they could butylate
Forma con V-ing
I could be butylating you could be butylating she could be butylating we could be butylating you could be butylating they could be butylating
Perfecto
I could have butylated you could have butylated she could have butylated we could have butylated you could have butylated they could have butylated
Perfecto con V-ing
I could have been butylating you could have been butylating she could have been butylating we could have been butylating you could have been butylating they could have been butylating
Negación
Forma simple
I could not butylate you could not butylate she could not butylate we could not butylate you could not butylate they could not butylate
Forma con V-ing
I could not be butylating you could not be butylating she could not be butylating we could not be butylating you could not be butylating they could not be butylating
Perfecto
I could not have butylated you could not have butylated she could not have butylated we could not have butylated you could not have butylated they could not have butylated
Perfecto con V-ing
I could not have been butylating you could not have been butylating she could not have been butylating we could not have been butylating you could not have been butylating they could not have been butylating
Forma interrogativa
Forma simple
could I butylate? could you butylate? could she butylate? could we butylate? could you butylate? could they butylate?
Forma con V-ing
could I be butylating? could you be butylating? could she be butylating? could we be butylating? could you be butylating? could they be butylating?
Perfecto
could I have butylated? could you have butylated? could she have butylated? could we have butylated? could you have butylated? could they have butylated?
Perfecto con V-ing
could I have been butylating? could you have been butylating? could she have been butylating? could we have been butylating? could you have been butylating? could they have been butylating?
Forma interro-negativa
Forma simple
could I not butylate? could you not butylate? could she not butylate? could we not butylate? could you not butylate? could they not butylate?
Forma con V-ing
could I not be butylating? could you not be butylating? could she not be butylating? could we not be butylating? could you not be butylating? could they not be butylating?
Perfecto
could I not have butylated? could you not have butylated? could she not have butylated? could we not have butylated? could you not have butylated? could they not have butylated?
Perfecto con V-ing
could I not have been butylating? could you not have been butylating? could she not have been butylating? could we not have been butylating? could you not have been butylating? could they not have been butylating?