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: 7, 15, ['S', 'y', '7973', 'U', 't', '5543', '5603', '9565', 'i', 'V', 'z', '4795', 'f', '3561', '4029', 'a', '4729', 'v', '7135', '5871']

40293561f4795zVi95655603