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.

Ex Input:
5, 6, ['v', 'g', '5867', '9693', 'T', 'd', 'K', 'x']

Ex Output:
dT


Ex Input:
2, 6, ['2245', 'H', 'X', '339', '4389', '5331', '6865', '4541', '4845', '6071']

Ex Output:
13359834933XH


Ex Input:
4, 4, ['8393', '8873', '6317', 'N', '2549']

Ex Output:

N