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: 18, 25, ['F', 'U', 'i', 'f', 'd', '9649', '8703', '5697', 'j', 'T', '5485', '5041', '7121', 'o', '2085', 'v', 'Z', 'o', 'u', '4319', 'm', 'Z', '2737', 'S', '2945', '4777', 'Y']

2945S2737Zm4319uo