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: 2, 3, ['T', '9003', '3731', '287', '7101', 'm', '2147', '6123', '6319']

Answer: 13733009


Question: 1, 4, ['t', '6037', 'I', '2769', 'C']

Answer: 9672I7306t


Question: 5, 7, ['J', '9237', 'K', '985', '1281', '5043', '5159']

Answer:
951534051821