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]: 1, 1, ['g', '3127', 'O']
[A]: g


[Q]: 4, 4, ['8393', '8873', '6317', 'N', '2549']
[A]: N


[Q]: 6, 6, ['5007', 'H', '2893', 'F', '2425', '5213', '2003', 'b', 'w']
[A]:
3125