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, ['2661', 'T', '8855', 'I', 'f', 'P']

Answer: 5588T


Question: 1, 3, ['8015', 'y', 'r', '8077', 'U']

Answer: ry5108


Question: 6, 9, ['Q', '2251', '4317', 'L', '3813', '1159', 'b', '1443', '7221', 'u', '7041', '4521', 'U', '5899', '9415']

Answer:
12273441b9511