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: 3, 5, ['q', 'G', '9871', '3427', 'Q', '1993', 'H']
Example Output: Q34279871

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

Example Input: 9, 14, ['W', '9307', 'v', 'd', 'x', '9793', 'G', 'V', 'X', 'p', 'g', 'Y', 'F', 'K']
Example Output:
KFYgpX