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:
4, 13, ['6993', '5601', 'n', 'J', 'E', 'M', 'd', 'T', 'V', 'C', '4969', 'J', 'F']
answer:
FJ9694CVTdMEJ


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:
3, 10, ['1645', '239', '4045', 'W', 's', 'P', '1761', 'C', '245', '8159', 'Y', 'P', 'H']
answer:

9518542C1671PsW5404