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, 3, ['5191', '9077', 'a']

A: a7709
****
Q: 7, 10, ['417', '8131', '7239', '9699', 'z', 'H', 'P', '9349', '4835', '3217', '9899']

A: 712353849439P
****
Q: 17, 21, ['9669', '5831', '4713', 'L', '5951', 'J', '6417', '3191', 's', 't', '5013', 'P', '6929', '4565', 'J', '5661', '9969', 'j', '3017', 'Z', '1071', '2669', '5027', 'j', '3989', '5695']

A:
1701Z7103j9699
****