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: 20, 26, ['9693', 'i', '8753', 'f', '9131', 'v', '2831', '1541', 's', '8307', '373', 's', 'z', '4929', 'I', '741', 'K', '7767', '2557', 'f', '887', 'g', '779', 'k', '5967', '4947', '2373', '7251', '8841', '3277']

Answer: 74947695k977g788f


Question: 4, 9, ['d', '1057', '5737', '6925', '6365', 'y', 'w', '6535', 'P', 'F']

Answer: P5356wy56365296


Question: 19, 21, ['7071', '1997', '7973', '3761', '5925', '6785', 'b', 'b', '1733', '8155', '1117', '3', 'k', '1083', 'k', '9053', '2507', '9699', '7295', '3739', 'p', 'D', 'R', 'e']

Answer:
p93735927