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.

2, 4, ['B', '5601', 'v', '7431', 'z']
1347v1065

1, 1, ['T', 'Y']
T

5, 12, ['n', '2459', 'R', '6009', '9109', 'A', 'l', 'W', 'U', '1313', 'Z', '9773', '7885', '4959', '5151', 'q', '8967', '9967', 'a']

3779Z3131UWlA9019