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: 3, 4, ['6865', 'A', 's', 'o', '1989', 'i', '613', 'S', 's']

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

A: i7438zt1189u
****
Q: 1, 2, ['L', '9305']

A:
5039L
****
