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: 3, 7, ['x', 'f', 'L', '3571', '6083', '2379', 'V', '1985', 'r', '2161', '1873', 'i', 'U', 't', 'Z', 'p', 'h', '891', 'Q']

V237960833571L