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.
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Question: 5, 7, ['u', '3017', '4149', 'z', '9231', 'C', '7461', 'e']

Answer: 1647C1329


Question: 3, 7, ['P', 'P', 'H', 'r', '3563', 'n', 'M', '1577', '6453']

Answer: Mn3653rH


Question: 4, 13, ['8789', '5321', 'D', '7475', '9425', '7249', '6725', '4567', 'R', '2861', '7379', '6357', 'B', 'J', '1283']

Answer:
B753697371682R76545276942752495747