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: 19, 20, ['w', '4131', 'C', '719', '2961', 'Q', '4167', '1001', 'p', '965', '1153', '6881', '3361', 'H', 'f', 'V', '9393', 'x', '6091', 'B', '6757', 'U', '2619', '5649', '6447', 'D']

Answer: B1906


Question: 1, 2, ['8165', 'R', 'y', '9865', 'z', 'Z', '9719', '7485', '4049', 'm', 'V', '67', '6101', '5057', 'g', 'l', '6809', '1983', '1091', 'u', '9835']

Answer: R5618


Question: 15, 28, ['M', 'S', '6497', 'p', 'c', 'Z', 'x', '2753', 'n', '8923', 'K', '4451', 'w', 'J', 'O', 'n', '9819', 't', 'k', '6849', 'L', '8687', '9473', 'j', '8355', 'W', 'N', 'p']

Answer:
pNW5538j37497868L9486kt9189nO