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: 5, 9, ['V', 'G', '4689', 'I', '6573', 'v', '4999', 'V', 'H', 'U', '2383', '489', '8517', 'K', 'A']

Answer: HV9994v3756


Question: 13, 16, ['a', 'y', 'd', 'F', 'P', '8965', 'G', 'V', 'W', 'y', '4275', '7653', '5643', '321', 'u', '721', 'm', '1483', '3321', '3851', '6373', '9445', '1193']

Answer: 127u1233465


Question: 5, 18, ['9773', 'b', 'n', 'Y', 'b', 'N', '2691', '1999', 'r', '4915', 'D', '4115', 'r', '611', 'c', '1169', '8777', 'i', 'Y']

Answer:
i77789611c116r5114D5194r99911962Nb