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: 20, 22, ['6437', 'V', '3523', 'h', 'l', '9483', '8983', '5635', '1515', '1575', '4735', '8749', 'J', '5869', 'm', '7825', '4333', 'h', '5127', 'K', 'l', '5333', '6935', 'U', 'R']

Kl5333