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:
1, 12, ['2851', 'v', '8871', 'Z', '2227', 'm', 'z', 'B', 'v', '765', '1435', 'V', 'X', 'k', '5955', '2549']

Ex Output:
V5341567vBzm7222Z1788v1582


Ex Input:
12, 18, ['g', 'v', 'F', 'O', 'N', 'j', '1863', 'e', '1855', '2611', '8433', 'v', '4363', 'D', '8697', '3967', '8395', 'Q', 'L', 'F', 'a', 'I', 'i', 'C', 'M']

Ex Output:

Q593876937968D3634v