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: 3, 10, ['s', '3299', 'K', 'D', '4621', '9075', 'K', '6987', 'S', '9829', 'm', 'I', '3797']

Answer: 9289S7896K57091264DK


Question: 6, 10, ['4631', 'q', '4689', 'w', '499', '3383', '8091', '7699', 'H', '6359', 'I', '267', 'v', '3295', 'H', '4815', 'u', 'o', '5023', 'n', '9471', '7435']

Answer: 9536H996719083833


Question: 17, 19, ['L', '1425', 'W', 'n', '9479', '7029', '3789', 'n', 'i', '5623', 'O', '8133', '4195', '8779', 'j', '885', '7675', 'm', '2623', 'F', '4413', 'A', '9867', 'g', 'd', 'n', 'e', 'j']

Answer:
3262m5767