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: 16, 19, ['3143', '2135', '7223', '7841', '5399', '9495', '6721', '9691', '8159', '6365', 'J', '8467', '2397', '117', 'b', 'K', '8985', '7783', 'X', 'U', 'P']

K89857783X