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.

[EX Q]: 5, 9, ['4175', '3747', 'b', 'u', 'V', 'R', '2345', '3543', 'c', '71', '2477', 'X', '7045', '9019', '5773', '2277', '5989', '331', 'I', '5997', 'J', '5291', 'm', 'r', 'p', '2609', '7261']
[EX A]: c34535432RV

[EX Q]: 2, 4, ['4047', 'S', '4249', '1735', '207']
[EX A]: 53719424S

[EX Q]: 8, 20, ['931', '8373', '1465', 'L', 'w', '7315', '3215', '2179', 's', '4767', 'V', '4177', '8987', '1685', '903', 'U', '2499', 'p', '8987', 'w', 'O', '1405', '9539', '2309', 'q', 'o', '5715', 'k', 'Y', 'b']
[EX A]:
w7898p9942U309586178987714V7674s9712