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.

Q: 2, 7, ['9969', 'u', '9811', 't', 'z', '8347', 'i', 'O', '5897']

A: i7438zt1189u
****
Q: 3, 7, ['P', 'P', 'H', 'r', '3563', 'n', 'M', '1577', '6453']

A: Mn3653rH
****
Q: 10, 12, ['B', '2271', 'Q', 'G', '9071', '921', 'R', 'F', 's', '9277', 'V', 't']

A:
tV7729
****