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, ['l', '955', '7133', 's', '8131', 'T', 't', 'E', 'T', '4745', '8125', '6325', '353', '2711', '817', 'T', '8975', 'H', 'm', 'W', '981', '9573']

W9819573