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, 14, ['R', 'S', '8031', '5461', 'g', '3405', '2185', '7737', '8757', 'A', 'e', 'C', 'r', '7035', '4573', 'i', 'z', 'I', 'x', 'P', '7753', '107', 'l', 'Q', '6223', 'B', '1721']

Answer: 5307rCeA7578737758125043g16451308


Question: 3, 9, ['R', 'r', '7889', '4141', '1281', 'x', '9299', '4803', 'k', '2433']

Answer: k30849929x182114149887


Question: 4, 10, ['S', 'G', '329', '9275', 'R', 'j', 'K', 'T', 'k', 't', 'w', '1611', 'x', '3365', 'c', '7649', '8357', '4075']

Answer:
tkTKjR5729