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: 12, 20, ['e', '7147', 'b', 'D', '8181', 'W', 'y', '9391', '9593', 'x', '5493', '4653', '3405', '801', 'l', 'X', 'W', 'B', 'U', '9411', 'O', 'X']

46533405801lXWBU9411