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, 19, ['L', '8791', '911', '5859', '1767', 'n', '2115', 'b', '2763', '7383', 'N', '3145', 'j', '4141', 'q', 'R', '8223', '7817', 'a', 'A', 'V']

a78178223Rq4141j3145N73832763b