After listing the ten plagues that befell Pharaoh and the Egyptians, the Haggada comments that Rabbi Yehuda came up with an acronym for the ten plagues: “detzakh, adash, be-achav.”  The obvious question that has troubled many is the reason and significance behind this acronym.  What difference does it make that Rabbi Yehuda made such a classification? How does this add to our understanding of the ten plagues?