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:
11, 18, ['7155', 'W', '8393', 'q', 'E', 'S', 'B', '949', '4761', '8663', 'V', 'V', '5047', '4111', '3235', 'I', '1289', 'P', 'O', 'w', '8307', '6725', 'h', '735', 'j', 'x', '1061']

Ex Output:
P9821I532311147405VV


Ex Input:
2, 6, ['415', '3603', 'l', 'C', '9471', 'z', '4087', 'Y', 's']

Ex Output:
z1749Cl3063


Ex Input:
7, 9, ['u', 'J', 'K', '6173', 'd', '7707', '6731', '4237', 's', '427', 'X', '2017', '6609', 'h', '6523', '3231', '1933']

Ex Output:

s73241376