instruction:
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.
question:
2, 11, ['X', '2085', 'N', 'v', '5217', '27', '8089', 'V', '5201', '911', '5343', 'X', 'X', 'U', '9441', 'W', '2931', 'z', 'M', 'Z', '4647', 'c', 'R', '9231']
answer:
34351191025V9808727125vN5802


question:
5, 9, ['g', 'B', '7695', 'X', 'h', 'A', '693', 'x', 'Q', 'l', 'Q', '9223', 'y', 'a', 'q']
answer:
Qx396Ah


question:
1, 2, ['1887', '6867', '373', '2371', 'a']
answer:

76867881