What will be printed to console?

class Outer {
    public class Inner {
        enum Nums {
            ONE, TWO, THREE;
        }
    }

    public static void main(String... args) {
        for (Inner.Nums n : Inner.Nums.values()) {
            System.out.println(n);
        }
    }
}
Explanation
Inner classes can't declare enums.
If Inner is declared static, code would compile and print out
ONE
TWO
THREE

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