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, 13, ['9827', '3335', 'K', 'p', '7941', 'U', '4513', 'l', 'B', '179', '9825', '5437', 'u', '7853', '8907', 't', 'V', 'U', 'K', '7159', '6077', 'n']

Answer: u73455289971Bl3154U1497pK


Question: 3, 6, ['643', 'X', 'F', '7453', '8495', '7943']

Answer: 349759483547F


Question: 9, 10, ['l', '2683', 'y', '5091', 'M', '5737', 'E', 'o', 'd', 'R', 'J']

Answer:
Rd