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, ['7635', 'c', 'h', 'D', 'K', '7235', 'e']

Ex Output:
hc5367


Ex Input:
1, 7, ['j', 'P', '5633', 'g', 'z', '3163', '8849', '1267', '1157', '6987', '9743']

Ex Output:
94883613zg3365Pj


Ex Input:
8, 10, ['8675', 'c', '7471', 'z', '9003', '2285', '2947', '2607', 'g', 'K', 'm', 'I', '8405', 'x', '5727', 'A', '4917', 'R', 'n', 'G']

Ex Output:

Kg7062