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 concatenate all elements of A from the ith element to the jth element, and print 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.
Input: 2, 20, ['811', 'P', 'F', '1819', 'C', '235', 'h', 'Y', 'k', '8883', 'z', '3833', '9835', 'L', 'm', '9811', 'A', '769', '9641', 'x', '8951', 'n', '8289', '2879', 'c', '5929', 'V']

PF1819C235hYk8883z38339835Lm9811A7699641x