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: 4, 13, ['6993', '5601', 'n', 'J', 'E', 'M', 'd', 'T', 'V', 'C', '4969', 'J', 'F']

A: FJ9694CVTdMEJ
****
Q: 3, 8, ['s', '8395', '7689', 'x', 'P', '5953', 'X', 'D']

A: DX3595Px9867
****
Q: 6, 10, ['s', '215', '439', '9505', 'H', 'Z', 'N', 'q', 't', 'w', '6629', '1843', '7165', 'a', '843']

A:
wtqNZ
****