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:
1, 3, ['7761', '8153', '1073']

Ex Output:
370135181677


Ex Input:
1, 8, ['X', 'I', '9323', 'A', 'v', 'd', '7685', 'Z', 'p']

Ex Output:
Z5867dvA3239IX


Ex Input:
1, 11, ['G', 'f', '8619', '5063', '1157', 'E', 'P', 'Z', '9507', 'v', '891', 'S', '3791', '5949']

Ex Output:

198v7059ZPE751136059168fG