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.

4, 7, ['1247', 's', 'J', 'w', 'X', '7211', 'c']
c1127Xw

6, 7, ['8123', 'G', '4941', 'Z', 'i', 'T', '3335']
5333T

8, 9, ['7151', 'n', 'C', 'l', '4333', 'i', 'b', '1943', '2221', '6523']

12223491