Definition: In this task, you are given inputs i,j, and A, where i and j are integers and A is a list. You need to concatenate all elements of A from the ith element to the jth element, and print the resultant string. i and j will be non-negative, and will always have a value less than the length of A. i will always be less than j.
Input: 15, 20, ['8715', 'i', '5455', '3511', 'd', 'W', '6121', '2979', '8659', '7343', 'C', '8705', '523', 'Q', 'T', '9569', 'S', 'j', 'T', 'G', 'W', '3119', 'k', 'M', 'U', 'F', '3619', '1359']

T9569SjTG