         
         init(_ string: String) {
             self.string = string
+        }
+        
+        static func multiple(with strings: [String]) -> [PrefixHolder] {
+            return strings.map { PrefixHolder.init($0) }
         }
         
         func match(with object: PrefixHolder) -> Match {

    }
    
    func testChangeMovement() {
        let a = [PrefixHolder("a"), PrefixHolder("b"), PrefixHolder("c"), PrefixHolder("d")]
        let b = [PrefixHolder("a"), PrefixHolder("c1"), PrefixHolder("b1"), PrefixHolder("d1")]
        
        let diff = Diff(from: a, to: b)
        

    }
    
    func testInsertionDeletionChange() {
        let a = PrefixHolder.multiple(with: ["a", "b", "c"])
        let b = [PrefixHolder("c1"), PrefixHolder("d")]
        
        let diff = Diff(from: a, to: b)
