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, 19, ['c', '1773', 'A', '6081', 'g', 'c', '241', '3991', 'K', '5525', 'r', '3293', 'P', '6413', '2281', '1361', 'c', '3403', '8979', 'b']

89793403c136122816413P3293r5525K3991241cg6081