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.

Ex Input:
5, 18, ['4601', 't', '8049', 'E', '8955', '9917', '2659', '533', 'I', 'm', '2911', '9549', 'S', 'R', 'E', '5993', 'S', 's', 'm', 's', '4683', '1375', 'F', 'Y', '2527', '5497', '1513', 'K']

Ex Output:
sS5993ERS95492911mI533265999178955


Ex Input:
3, 5, ['3897', 'j', 'o', 'v', '6633', 'b', '3875', 'J']

Ex Output:
6633vo


Ex Input:
15, 16, ['243', '3195', '1763', '1283', '1463', '2655', '7', 'S', 's', '3155', 's', 'D', '7659', 'Q', 'm', '3821', '593', 'D', '5447']

Ex Output:

3821m