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: 30, 30, ['t', 'W', 'P', '7193', '913', 'j', 'Y', '9535', '7771', 'R', '9275', '7115', '3433', '5279', 'T', '8899', '9497', 'U', '3461', '1753', 'k', 'T', '7899', '6963', '9271', '9173', '3357', '3521', '7397', 'r']

Answer: r


Question: 3, 8, ['b', 'y', '8779', '3949', 'c', 'a', '111', '6649']

Answer: 9466111ac94939778


Question: 2, 7, ['i', '6091', 'q', 'A', 'I', 'z', '6377', '3229', 'H', 'Q', 'r', '3631', '355', 'z', 'P', '4613']

Answer:
7736zIAq1906