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, 13, ['217', '841', 'G', 'N', '5667', '9343', '8067', '7679', 'T', 'Z', 'G', '6499', 'n']

Ex Output:
n9946GZT9767760834397665


Ex Input:
4, 9, ['d', '1057', '5737', '6925', '6365', 'y', 'w', '6535', 'P', 'F']

Ex Output:
P5356wy56365296


Ex Input:
5, 7, ['K', '5011', 'q', 'R', '3351', 'n', 'Y']

Ex Output:

Yn1533