请输出以下代码的执行顺序

package com.example.demo;public class ClassA {// 静态变量static int a = 10;static int b;// 静态代码块static {System.out.println("Static block A");b = a * 2;}public static void functionA(){System.out.println("Function A");}public ClassA() {functionA();System.out.println("ClassA constructor");}public static void main(String[] args) {System.out.println("a = " + a);System.out.println("b = " + b);}
}

package com.example.demo;public class ClassB extends ClassA{private static int a =12;private static int b= 13;static {System.out.println("static block B");}public static void functionB(){System.out.println("ClassB functionB");}public ClassB(){functionB();System.out.println("ClassB constructor");}public static void main(String[] args) {new ClassB();}}