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, 9, ['R', 'r', '7889', '4141', '1281', 'x', '9299', '4803', 'k', '2433']

Answer: k30849929x182114149887


Question: 10, 11, ['q', '6245', 'O', '5361', '8343', 'D', 'X', '6285', 'F', 'q', '4911', '9613', 'z', '159', 'Y', '1341']

Answer: 1194q


Question: 7, 9, ['H', '2647', '1535', 'm', '2805', '8511', 'o', '9855', '583', 'r', 'P', '1101', '4599', 'r', '7773', '5621', 'A', 'L', '9291', '5017', 'I', '2685']

Answer:
3855589o