You will be given a definition of a task first, then some input of the task.
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.

6, 17, ['m', '4777', '4813', '5721', '2279', '7095', 'T', 'O', 'B', '7395', '4117', '1763', '7255', 'J', 'p', 'd', 'Y', '6633', 'h', '1671', '4579']
Output:
YdpJ5527367171145937BOT5907