How to chain job using Queueable Apex

I am trying to chain job but the inner class code is not executing.

public class MyQueueable1 implements Queueable {
    Public Static list < Account > acclist = new list < Account > ();
    public MyQueueable1() {
    }
    public void execute(QueueableContext context) {
        System.enqueueJob(new MyQueueable2());
    }
    public class MyQueueable2 implements Queueable {
        public MyQueueable2() {
        }
        public void execute(QueueableContext context) {
            List < Account > a = [SELECT Id, Name
                                  FROM Account WHERE Id =: acclist];
        }
    }
}