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:
16, 22, ['7741', 'A', 'M', 'N', '7967', '1049', '6971', '5547', '3263', 'x', '2675', '9757', '343', 'g', '8277', '3727', '5711', 'M', 'J', '6417', '1085', '3885', 'M']

Ex Output:
588358017146JM11757273


Ex Input:
10, 18, ['S', 'S', '6525', '3017', '9729', '5747', '4409', '9501', '4083', 'f', 'X', 'B', 'u', '5967', '9949', '7227', '6993', '8105', 'n', 'C', '2131', '3105', 'd', 'E']

Ex Output:
50183996722794997695uBXf


Ex Input:
1, 3, ['9937', 'F', 'g', 'B', 'M', 'x', 'n', 'V', '4241', 'Z']

Ex Output:

gF7399