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: 8, 10, ['7423', 'w', '7743', 'k', 'n', 'P', 'F', 'Q', 'F', '8993', 'p', '4679', '9713', 'z', '2007', 'g', 'X', 'a']

8993FQ