I don't know why
Pero no sé, no sé porqué viene así, no sé, es una cosa tuya.
But I don't know, I don't know why it comes like this, I don't know, it's something you do.
— El secreto de sus ojos (2009)
No sé porqué lo ponen siempre tan arriba.
I don't know why they always put it so high up.
— Perdición (1944)
No sé porqué Tom no quiere hacer eso.
I don't know why Tom doesn't want to do that.