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: 14, 18, ['f', '1131', 'K', 'z', 'e', '2743', 'N', 'D', 'E', '1381', '9405', '7087', 'J', '9073', '7901', '7935', '1703', 'r']

r1703793579019073