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, 5, ['1769', '8475', '6093', '8939', 'V', '2263', '8825', '3527', '4195', 'A', '7999', '7841', '4967', '1829']

Ex Output:
V939839065748


Ex Input:
11, 12, ['z', 'y', 'R', '6287', '4197', '3293', '3153', 'K', '4947', '9051', 'w', '2343', '8697', '3145', '9297', 'Y', '5789', 'r', '4249', 'Y', 'Z', '5041']

Ex Output:
3432w


Ex Input:
2, 4, ['8769', 'C', 'H', '8187', '7463']

Ex Output:

7818HC