给用户提供一篇英文文献，并要求将文献中的单词按照字典序排列，并输出结果。
Here is the reference paper: 

Title: A Comprehensive Survey on Graph Neural Networks
Authors: Zonghan Wu, Shirui Pan, Fengwen Chen, Guodong Long, Chengqi Zhang, Philip S. Yu
Journal/Conference: IEEE Transactions on Neural Networks and Learning Systems
Year: 2021

And here are the words in alphabetical order: 

A, Comprehensive, Graph, Networks, Neural, On, Survey, Transactions, IEEE, Learning, S, Systems, Zonghan, Chengqi, Fengwen, Guodong, Long, Pan, Philip, Shirui, Wu, Zhang