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.

Example Input: 5, 7, ['l', '3735', 't', 'D', 'M', 'G', 'p', '7645', 'u']
Example Output: pGM

Example Input: 2, 8, ['4363', 'N', 'J', 'Z', '4447', 'P', '6839', 'Q', '85', 'W', 't', 'C', 'X', '3879', 'X', 'Q']
Example Output: Q6839P4447ZJN

Example Input: 2, 2, ['5473', '9735']
Example Output:
9735