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: 3, 6, ['p', 'H', '2775', '2567', '7787', 'D', '3807', '4817', '5399']

A: D787776525772
****
Q: 2, 3, ['N', 'U', 'D', 'm', '9001', 'I', '2675', 'l', '2771', 'U', '1181', 'U']

A: DU
****
Q: 8, 8, ['c', '3921', 'w', '7991', '2045', '9159', 't', 'i', '8997', '4079']

A:
i
****