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, 2, ['8679', 'G', '1819']

A: G
****
Q: 3, 8, ['s', '8395', '7689', 'x', 'P', '5953', 'X', 'D']

A: DX3595Px9867
****
Q: 16, 21, ['8055', 'J', 'E', '5993', '83', '3881', 'q', '4955', 'N', 'G', 'J', '3167', 'G', '9455', '8221', 'O', 'c', '9211', 'c', 'M', 'm', 'w', '1905', '5037', '8621', '6169', '5559', '6459', 'k', 'M']

A:
mMc1129cO
****