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: 11, 12, ['b', 'U', 'R', '8349', 'h', '8241', 'n', 'U', '1055', '1217', '1597', '8501', 'q', '9629', 'M', 'W', 'c', '4777']

85011597