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, 9, ['7671', '575', 'l', '989', '7015', 'X', 'x', '3543', '3771', '905', '3815', 's']
[A]: 17733453xX5107989l


[Q]: 2, 9, ['9889', 'H', 'e', 'R', 'd', '8771', 'M', '5589', 'V', 'm', '8625', '6173', '8077', '1147', '1515', '8759', '5103']
[A]: V9855M1778dReH


[Q]: 15, 17, ['8155', 'q', 'K', '6489', 'k', '4787', 'z', 'n', 's', '3069', '7635', 'r', '3689', '7633', '5911', '8125', '1219', 'e', 'x', 'D', '221', '7817']
[A]:
912152181195