So let's look at the first most common solution, which is the horizontal method we're gonna take in a ray here of four difference words, we're going to have Apple apply eight and at, and the goal is defined the longest common prefix, which in our case we know is going to be a now with the horizontal method, we're going to take the first and the second word from the rape, and we're going to compare them letter by letter to see where they have similarities and differences.