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: 9, 18, ['1633', '2117', 'x', '5667', '9509', 'r', '4869', '2915', '3869', '2805', 'J', 'p', 'W', 'E', '6863', 'H', '6301', 'S', '3307', 'k', 'U', 'a', 'q', '4501', 'n', 'j', '1961', '8767', '4583', 'c']

S6301H6863EWpJ28053869