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: 5, 12, ['6309', '3225', 's', 'g', '3435', 'B', 'T', 'r', 'e', '2233', 'Y', 'h', '8489', '4931', '7939', 'n', '9709', 'R', '2653']

hY2233erTB3435