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: 4, 9, ['t', '3545', 'S', '1635', 'Q', '2851', 'Z', 'A', '391', 'R', '3773', '8909', 'A', '255']

391AZ2851Q1635