Original sentence: Grand Trunk Western Railroad  <center>54  <center> 1766-1767, 4134–4139,4427-4449, 4517, 4520, 4539–4549, 4553-4557, 4900-4906, 4909-4914, 4916-4917, 4919-4922, 4930-4931,4600-4635 (GP9R), 4552 (GP9RM)
Edited sentence: Grand Trunk Western Railroad  <center>54  <center> 1751-1767, 4134–4139, 4539–4549, 4907–4922, 4930–4933