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: 15, 18, ['9099', '2041', '7065', '1323', '2267', '5877', 'r', 'j', '4411', 'u', 'V', '4919', '6401', '8449', 'X', 'H', 'z', 's', '2543', '4643']
Example Output: szHX

Example Input: 11, 15, ['Y', 'L', 'I', 'u', 'z', '4077', 'K', '4679', 'l', '9269', '4071', '1789', 'b', '2139', 'b', '111', '6715', 'H', '3981']
Example Output: b2139b17894071

Example Input: 5, 18, ['L', 'A', 'L', 'v', '4759', 'W', '3151', 'L', '7173', '6437', '4083', 'D', '5517', 'Q', 'w', 'c', '9229', '8429', '7629', '8393']
Example Output:
84299229cwQ5517D408364377173L3151W4759