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, 6, ['e', 'w', '503', '2677', '4099', 'F', '4781', '3995', '8221', 'z', '6689', 'L', '3821', 'b', 'A', 'P', '4037', 'v', 'M', '3919']
F99047762305

3, 8, ['6945', '2403', '7633', '2933', '1015', 'G', '7261', '9101', '6435', 'M']
10191627G510133923367

8, 14, ['6437', 'O', 'B', 'E', '147', 'E', '1155', '2547', 'q', '1955', 'Q', '4785', 's', 'r', '3691', 'Z', 'O', '6533', 'h', 'I', 'q', 'k', 'd', 'g', '1977', 'K', '2163', '8441', 'c', 'p']

rs5874Q5591q7452