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: 3, 6, ['z', 'b', '2697', 'W', '1449', 'x', '5327']

Answer: x9441W7962


Question: 1, 2, ['A', '8103', '7829']

Answer: 3018A


Question: 6, 6, ['T', 'e', '8019', 'o', '6577', 'P', 'B', '1405']

Answer:
P