I could harness you could harness he could harness we could harness you could harness they could harness
Forma con V-ing
I could be harnessing you could be harnessing he could be harnessing we could be harnessing you could be harnessing they could be harnessing
Perfecto
I could have harnessed you could have harnessed he could have harnessed we could have harnessed you could have harnessed they could have harnessed
Perfecto con V-ing
I could have been harnessing you could have been harnessing he could have been harnessing we could have been harnessing you could have been harnessing they could have been harnessing
Negación
Forma simple
I could not harness you could not harness he could not harness we could not harness you could not harness they could not harness
Forma con V-ing
I could not be harnessing you could not be harnessing he could not be harnessing we could not be harnessing you could not be harnessing they could not be harnessing
Perfecto
I could not have harnessed you could not have harnessed he could not have harnessed we could not have harnessed you could not have harnessed they could not have harnessed
Perfecto con V-ing
I could not have been harnessing you could not have been harnessing he could not have been harnessing we could not have been harnessing you could not have been harnessing they could not have been harnessing
Forma interrogativa
Forma simple
could I harness? could you harness? could he harness? could we harness? could you harness? could they harness?
Forma con V-ing
could I be harnessing? could you be harnessing? could he be harnessing? could we be harnessing? could you be harnessing? could they be harnessing?
Perfecto
could I have harnessed? could you have harnessed? could he have harnessed? could we have harnessed? could you have harnessed? could they have harnessed?
Perfecto con V-ing
could I have been harnessing? could you have been harnessing? could he have been harnessing? could we have been harnessing? could you have been harnessing? could they have been harnessing?
Forma interro-negativa
Forma simple
could I not harness? could you not harness? could he not harness? could we not harness? could you not harness? could they not harness?
Forma con V-ing
could I not be harnessing? could you not be harnessing? could he not be harnessing? could we not be harnessing? could you not be harnessing? could they not be harnessing?
Perfecto
could I not have harnessed? could you not have harnessed? could he not have harnessed? could we not have harnessed? could you not have harnessed? could they not have harnessed?
Perfecto con V-ing
could I not have been harnessing? could you not have been harnessing? could he not have been harnessing? could we not have been harnessing? could you not have been harnessing? could they not have been harnessing?