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, ['z', 'b', '2697', 'W', '1449', 'x', '5327']

A: x9441W7962
****
Q: 2, 6, ['415', '3603', 'l', 'C', '9471', 'z', '4087', 'Y', 's']

A: z1749Cl3063
****
Q: 6, 7, ['C', 'P', '1545', 'I', '7259', '2557', 'L', 'j', 'u', '4805']

A:
L7552
****