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:
18, 18, ['Z', 'w', '4525', 'E', 'x', '2541', '6953', '7899', '483', 'H', 's', 'M', 'c', 'Y', 'X', '2295', '4587', '2621', '4835', '1375', 'v', '9207', '3165']

Ex Output:
1262


Ex Input:
4, 7, ['C', 'j', 'F', '495', 'H', '6595', 'h', '7567', 'f']

Ex Output:
h5956H594


Ex Input:
20, 22, ['2637', '6921', '4415', '5321', '1741', 'N', '2835', '8659', '7633', 'A', 'h', '9873', 'g', '3417', '5689', 'o', 'U', '1435', '7331', 'Z', 'N', 'W', '7765', 'I', '1259', '1867', 'k']

Ex Output:

WNZ