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: 4, 12, ['5669', 'i', '2393', '1019', 'H', 'J', '1141', 'z', '5015', 'p', 'E', '6947', '8031', 'i', 'N', '2513', 'w', 'Q', 'z']

6947Ep5015z1141JH1019