Q$1.[10$ points$]$ Show the contents of a queue after the following operations are performed. Assume the queue is initially empty.

enqueue$(45)$;

enqueue$(12)$;

enqueue$(28)$;

dequeue$()$;

dequatue$()$;

enqueue$(69)$;

enqueue$(27)$;

enqueue$(99)$;

dequeue $()$;