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: 1, 2, ['Q', '6249', 'm', 'H', 'x', 'b', 'Z', 'z', '15']

A: 9426Q
****
Q: 10, 27, ['z', '7203', 'd', '1795', '45', '1803', 'L', '2839', '6285', 'W', '1969', 'x', '6565', '8849', '6091', 'M', '7925', '37', 'h', '381', '59', 'O', '3283', 'u', '9831', 'Y', '5701', '7249', 'w']

A: 1075Y1389u3823O95183h735297M190694885656x9691W
****
Q: 17, 21, ['F', '2111', '3791', '7351', 'e', '8037', '5773', 's', '5147', 'W', '9779', 'h', 'I', '2735', '93', 'Q', 'e', '2961', '5861', '6569', 'e', '6625', 'j']

A:
e965616851692e
****