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:
2, 10, ['V', '7549', '4639', '3825', '4619', 'w', '7667', '557', 'L', 'z', '1883', 'k', 'j', 'o', 'p', '3945', 'u', 'l', '5637']

Ex Output:
zL7557667w9164528393649457


Ex Input:
5, 22, ['N', 'h', '3071', 'C', '9811', 'B', '6247', 'l', '9637', '3467', '4895', '1491', '8011', 'k', '3983', 'W', '7901', '7111', '4927', '4679', 'P', 'L', '3925', '5991', 'C', 'z', 'q', '2369', '4401']

Ex Output:
LP9764729411171097W3893k11081941598476437369l7426B1189


Ex Input:
3, 11, ['7723', '4389', '2703', 'c', 'R', '7435', 'l', '9493', '5593', '8545', '8161', 'T', '4651', 'l', '1121', '7433']

Ex Output:

1618545839553949l5347Rc3072