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, ['4807', 'J', 'N', 'E', 'Z', 'x', '8959', 'Z', '7697', 's', '9065', 'y', 'v', '8569', '667', '6215', 'w', 'o', '1939']

y9065s7697Z8959xZ