We begin with עבדים היינו לפרעה במצרים - We were slaves to Paroh, ויוציאנו - And Hashem took US out. Then we say ואילו לא הוציא הקב"ה את אבותינו- Had Hashem not taken our AVOS out of Egypt etc.
But wait - we just said a moment ago that it was US who were taken out, not our Avos??
