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]: 11, 12, ['n', '8991', 'Z', '4113', '1623', '1351', 'l', 'p', 'T', '9931', '11', 'i', '1775', 'h', '7237', '8553', 'Q', 'U', '5395', '8727']
[EX A]: i11

[EX Q]: 7, 17, ['P', '9275', '2025', '6709', 'd', 'j', '745', 'F', 'd', 'T', 'w', 'E', '2915', 'g', 'E', 'r', '8951']
[EX A]: 1598rEg5192EwTdF547

[EX Q]: 1, 2, ['X', 'o', 'T', 't', 'T', 'S', '7021', 'b', 'V', '8725', '649', '3397', 'b', '3523', 'y', 'U']
[EX A]:
oX