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, 23, ['999', '8475', '5191', '5599', '6807', 'S', 'v', '6345', 'J', 'X', '6839', '6761', 'M', '6455', 'W', 'j', '475', '6165', 'c', '5639', '9427', 'y', '8719', 'j', '5375', 'K']

8719y94275639c6165475jW6455M6761