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: 17, 20, ['8039', '2773', 'G', 'I', 'f', '3973', '3157', 'T', 'n', '591', 'y', '3841', '6527', '1703', 'B', 'G', '2091', 'D', 'c', '8257', 'r', '8741', '1909', '3333']

2091Dc8257