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: 4, 14, ['Y', '3111', 'M', 'N', 'l', '721', 'j', '997', 'e', '353', 'd', '167', '5485', 'C', '745', 'x', 'k', '7269', '5835', 'F', 'D', 'Y', 'a', '117']

Answer: C5845761d353e799j127lN


Question: 11, 18, ['W', '5215', 'G', '6229', 'z', 'R', 'e', 'U', '5847', 'L', '1587', '7287', 'a', 'S', '4887', 'B', 'F', 'h', '7409', '8297', 'h', 'N', 'E', '9925', 'B', 'l', '6091', '1345']

Answer: hFB7884Sa78277851


Question: 10, 19, ['5483', 'p', 'd', 'e', '4221', 'm', '3461', '7563', '381', 'G', '7747', '9021', 'r', 'u', '4543', 'F', 'w', '1265', 'e', '2377', 'W', 'n']

Answer:
e5621wF3454ur12097477G