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.

Input: Consider Input: 2, 6, ['1467', 'm', '9771', '6533', 'm', 'x', 'c', 'd', '3139']

Output: xm33561779m


Input: Consider Input: 5, 6, ['7565', '6525', '7421', 'u', '303', '1815', '273', '6725', 'i']

Output: 5181303


Input: Consider Input: 12, 15, ['h', '7685', 'H', 'y', '5493', 'k', 'W', 'b', '3043', '1013', 'N', '269', '3947', '6215', '3445', '9305']


Output: 544351267493962