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, 3, ['8015', 'y', 'r', '8077', 'U']

Answer: ry5108


Question: 9, 25, ['u', 'b', '4819', 'm', 'm', '1651', 'H', 'O', '481', 'I', 'g', '8861', 'b', '2641', 'D', '5411', '7731', 'I', '257', 'I', '2055', '5441', '7079', 'D', '93', '6783']

Answer: 39D970714455502I752I13771145D1462b1688gI184


Question: 6, 21, ['9541', 'U', 'N', '3241', 'l', '2077', 'y', '6663', 'P', 'p', 'l', 'R', '2219', 'y', 'J', 'N', '2239', 'B', '889', '9471', 'd', '6829', 'm', 'A', '3809', 'L', '5', 'z', '8979', '5451']

Answer:
d1749988B9322NJy9122RlpP3666y7702