In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting 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 reverse first and then concatenate.
7, 20, ['5585', 'k', 'g', '3977', '2527', 'j', '4827', '995', 'J', 'L', '897', '1095', 'f', '1983', 'M', '9065', '2921', '7325', 'l', '2933', '9199', 'D', '243', 'l', 'j', '581', '9165', '9345', '79', 'M']