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, 20, ['J', 'g', 'A', '7391', 'n', 'D', '7151', 'c', 'n', 'm', '6015', '1721', 'k', 'L', 'D', '7067', 'o', '8661', '4043', 'h']

h40438661o7067DLk17216015mnc7151Dn7391Ag