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.

Q: 2, 12, ['W', 'R', 'P', '9411', '179', '5175', '7959', 'o', '4285', 'H', '7535', '3423', 'Q', '7813', '611']

A: 32435357H5824o959757159711149PR
****
Q: 1, 5, ['d', 'p', 'B', 'i', '5865', '4569']

A: 5685iBpd
****
Q: 17, 21, ['M', 'C', 'K', 'g', '1145', '7201', 'v', 'o', '5807', '4891', '2559', 'R', '1585', '5535', '3821', 'W', '5427', 'm', 'y', 'v', '6331']

A:
1336vym7245
****