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: 2, 15, ['2019', 'A', 't', 'n', '7819', '9845', 's', 'o', '8105', '9133', 'w', '129', '6583', 'r', '2399']

2399r6583129w91338105os98457819ntA