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]: 4, 4, ['w', '3895', '4989', '7875', 'u']
[A]: 5787


[Q]: 5, 6, ['v', 'g', '5867', '9693', 'T', 'd', 'K', 'x']
[A]: dT


[Q]: 12, 14, ['3781', 'T', '2489', '7621', '4147', '9005', 'z', '7465', 'f', 'Z', '75', 'F', '4193', 'x']
[A]:
x3914F