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, 3, ['o', 'o', '4511', '9203', '6071', 'Q', '5337']
[A]: 1154oo


[Q]: 4, 20, ['p', '1643', 'O', '5867', 'Y', 'j', '2411', 'Z', '2563', '4757', 'B', 'b', '7489', '815', 'c', '6631', '8571', '6537', 'm', 'T']
[A]: Tm735617581366c5189847bB75743652Z1142jY7685


[Q]: 3, 5, ['X', '513', 'W', '2055', 'L', 'F', 'J', 'U', 'd', 'j', 'V', '6221', '7467', '275', 'H', 'O', '3325', '6253', '6997', '5455']
[A]:
L5502W