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: 1, 2, ['y', 'n', 'a', '4367', 'Q', 'S']

Answer: ny


Question: 2, 9, ['g', '309', 'x', '3537', '5995', 'K', '6951', 'x', 'b', '3171', '9079', '7597']

Answer: bx1596K59957353x903


Question: 6, 10, ['4819', 'G', 'u', 'U', '5311', 'M', '6387', '5331', 'X', 'I']

Answer:
IX13357836M