Definition: In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant 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 concatenate the elements and then reverse the string.
Input: 11, 20, ['k', 'V', '7001', 'G', 'T', '5055', 'U', '5015', 'J', 'z', '3703', 'p', 'd', '9361', '3039', 'j', 'O', '947', 'b', '4209']

4209b947Oj30399361dp3703