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.

3, 11, ['B', 'V', 'S', '7211', 'U', '7773', '4803', 'z', '9371', 'l', 'S', '1559', 'l', '9203', '9919', 'M']
Sl1739z30843777U1127S

16, 18, ['7121', 'b', 'P', '7771', 'l', 'I', '7817', '5185', '7989', 'H', '4449', '3859', '869', '9321', 'O', '6453', '6219', '8349', '5327', 'm', 'c', 'O', '1185', '2703', '9673', 'q']
943891263546

14, 17, ['5379', 'S', 'c', '9497', '331', 'R', '2323', 'h', '4211', '6075', '6443', '897', 'A', '6371', '2907', 'L', 'x', 't', '2681', 'X', 'E', 'r', 'j', 't', 'j', 'r', 'W', 'b', 'D', 'P']

xL70921736