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: 4, 18, ['6017', '3811', 'g', 'X', '5289', 'G', '6203', 'L', 'd', '8897', '4557', 'g', '5753', 'I', 'I', 'M', '9773', 'C', 'f']

C9773MII5753g45578897dL6203G5289X