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]: 7, 8, ['U', 't', '8289', '9391', '1751', 'Y', '9319', 'A', 'Q', 'd', 'B', '2521', '2455']
[A]: A9139


[Q]: 2, 5, ['6345', '7381', 'm', '5685', '3267', '9841', '9719', 'N', 'e', '1455', 'i', '3989', '3285', '9257', 'u', '8547', '1799']
[A]: 76235865m1837


[Q]: 6, 6, ['8689', 'k', '183', 'I', 'a', 'b', 'e', '3271', 'X', 'T', 'T', '3789', 'j', '3735', '2909', 'J', 'N', '711', 'C', '5363', '2343', '6121']
[A]:
b