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: 6, 12, ['5943', 'r', 'w', '3603', 'M', 'j', 'f', '6089', '7123', '1455', 'I', '8937', 'v', '1503', '3199', '1601', 'y', '4273', 'R', '8601', '3835', 'V', '8771', 't']

8937I145571236089fj