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, 2, ['1467', 'm']

Answer: m


Question: 3, 3, ['H', '7843', '2823', '529']

Answer: 3282


Question: 2, 21, ['8027', '9139', '8769', '8875', 'V', '3061', 'v', '8895', '6267', '1193', '6453', '1473', 'J', 'l', 'F', '1581', '139', '8605', 'r', 'b', '9457', 'N', 'z', 'r', '9417', '7127']

Answer:
7549br50689311851FlJ37413546391176265988v1603V578896789319