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: 12, 18, ['m', 'r', '253', '9551', '5995', '8275', '7901', 'u', '333', 'R', 'J', 'V', '8671', '9301', 't', 't', 'h', '5545']

5545htt93018671V