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 find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output 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. Perform the operations in order, i.e., do not concatenate the elements and then reverse the string.
Input: 6, 17, ['L', 's', 'v', '6415', 'D', '6613', 'T', '1403', 'Q', '3473', 'Q', '9205', '575', '2369', '7745', 'V', '6839', '4627']

6839V774523695759205Q3473Q1403T6613