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, 8, ['6945', '2403', '7633', '2933', '1015', 'G', '7261', '9101', '6435', 'M']

Answer: 10191627G510133923367


Question: 3, 3, ['x', 'v', 'p', '4337', '635', '8927', 'B']

Answer: p


Question: 4, 5, ['b', 'w', '1385', 'Z', 'L', '3455', 'n', '2463', '1829', '3741', '5615']

Answer:
LZ