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: 3, 15, ['5807', 'M', 'A', 'm', '4557', 'P', 'y', '2895', 'K', 'K', '5379', '2367', 'M', '8653', '3847', 'D', '7725', '6571', 'L', '2011', 'h']

Output: 74833568M76329735KK5982yP7554mA


Input: Consider Input: 1, 7, ['P', 'h', '1443', 'b', 'K', '2641', '3831']

Output: 13831462Kb3441hP


Input: Consider Input: 4, 4, ['g', '3963', 'o', '9635', '8233', '6669', 'i', '5829', '1543', 'E']


Output: 5369