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: 5, 18, ['5363', '4283', '2481', '789', '1233', '3065', '3971', 'L', 'C', 'r', 'b', 'a', '8259', 'H', '5113', 'P', '7169', '7143', '9429', 'H', '7339']

71437169P5113H8259abrCL397130651233