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, 14, ['R', 'S', '8031', '5461', 'g', '3405', '2185', '7737', '8757', 'A', 'e', 'C', 'r', '7035', '4573', 'i', 'z', 'I', 'x', 'P', '7753', '107', 'l', 'Q', '6223', 'B', '1721']
5307rCeA7578737758125043g16451308

8, 12, ['C', 'w', 'Q', '8125', '4579', '8495', '363', 'a', 'C', 'T', '7905', '2631']
13625097TCa

6, 9, ['v', 'w', 'H', '4023', 'X', '3885', '5385', '5143', '2909', '9621', 'u', 'u', 'R']

9092341558355883