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: 21, 27, ['2701', 'B', 'm', 'R', '5913', '9069', 'J', 'v', '3179', '5855', '3295', '4485', '6097', '9655', '9345', '8589', 'R', 'H', 'v', '8235', '1983', 'u', 'r', '6453', 'q', '5085', 'H', '907']

1983ur6453q5085H