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, 12, ['9809', '4229', 'r', 'e', 'T', '1739', '5231', '6011', 'J', 's', '2153', '3997', '7011', 'Q', '2075', '1575', 'a', 'F', '3435']

39972153sJ601152311739Ter4229