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, ['i', '2555', 'G', '4549', 'a', '7443', '5361']
9454G5552

3, 8, ['s', '8395', '7689', 'x', 'P', '5953', 'X', 'D']
DX3595Px9867

5, 7, ['8415', 'u', 'l', '8269', 'G', 'f', 'J', 'y', 'm']

JfG