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, 3, ['i', '7465', '1315']
[A]: 51315647


[Q]: 5, 5, ['7991', '8029', '9605', 'u', '9539', 'q', '3789', 'i', '8639', '7477']
[A]: 9359


[Q]: 6, 12, ['I', 'v', '3625', '5015', 'w', '579', '219', 'h', 'j', 'k', 's', 'c']
[A]:
cskjh912975