This is the problem I'm stuck on, I don't think this is actually completeable. using my IDE I coded up this:
List al1= Arrays.asList();
List al2= Arrays.asList();
pln(""+al1+al2); //[][]
pln(""+(al1==al2)); //false
pln((Arrays.asList()==Arrays.asList())+""); //false
Java will always compare the references here and not the content so idk how people passed this in java

the test is the alphabet in lowercase and uppercase... there are 26 letters in the alphabet