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, 3, ['2047', 'R', '6885', '1243', 'Z']
[A]: 5886


[Q]: 1, 2, ['4211', '3035', '3071', '3941', 'D', '1851']
[A]: 53031124


[Q]: 9, 9, ['3405', 'Z', '8897', 'W', '7693', '2819', '7741', '1157', 'u']
[A]:
u