I could toil you could toil she could toil we could toil you could toil they could toil
Forma con V-ing
I could be toiling you could be toiling she could be toiling we could be toiling you could be toiling they could be toiling
Perfecto
I could have toiled you could have toiled she could have toiled we could have toiled you could have toiled they could have toiled
Perfecto con V-ing
I could have been toiling you could have been toiling she could have been toiling we could have been toiling you could have been toiling they could have been toiling
Negación
Forma simple
I could not toil you could not toil she could not toil we could not toil you could not toil they could not toil
Forma con V-ing
I could not be toiling you could not be toiling she could not be toiling we could not be toiling you could not be toiling they could not be toiling
Perfecto
I could not have toiled you could not have toiled she could not have toiled we could not have toiled you could not have toiled they could not have toiled
Perfecto con V-ing
I could not have been toiling you could not have been toiling she could not have been toiling we could not have been toiling you could not have been toiling they could not have been toiling
Forma interrogativa
Forma simple
could I toil? could you toil? could she toil? could we toil? could you toil? could they toil?
Forma con V-ing
could I be toiling? could you be toiling? could she be toiling? could we be toiling? could you be toiling? could they be toiling?
Perfecto
could I have toiled? could you have toiled? could she have toiled? could we have toiled? could you have toiled? could they have toiled?
Perfecto con V-ing
could I have been toiling? could you have been toiling? could she have been toiling? could we have been toiling? could you have been toiling? could they have been toiling?
Forma interro-negativa
Forma simple
could I not toil? could you not toil? could she not toil? could we not toil? could you not toil? could they not toil?
Forma con V-ing
could I not be toiling? could you not be toiling? could she not be toiling? could we not be toiling? could you not be toiling? could they not be toiling?
Perfecto
could I not have toiled? could you not have toiled? could she not have toiled? could we not have toiled? could you not have toiled? could they not have toiled?
Perfecto con V-ing
could I not have been toiling? could you not have been toiling? could she not have been toiling? could we not have been toiling? could you not have been toiling? could they not have been toiling?