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: 2, 10, ['1183', '2299', 'O', '963', 'E', '9319', 'L', 'R', '1293', '8707', 'n', 'D', '6721', '2219', '3293', 'J', '4673', '325', '285', '5331']

Answer: 70783921RL9139E369O9922


Question: 1, 7, ['P', 'h', '1443', 'b', 'K', '2641', '3831']

Answer: 13831462Kb3441hP


Question: 14, 23, ['2543', '9293', '4119', 'P', 'x', '895', '8843', '3985', '6083', 'Z', 'j', '1391', 'm', '7619', '1803', 'y', '8947', 't', 'N', '7681', '9205', 'b', '9839', '2157', 'N', '715']

Answer:
9389b50291867Nt7498y30819167