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: 1, 15, ['o', 'n', '2129', 'c', '8377', 'T', '5099', '2323', 'a', 'f', 'W', '6123', 'X', '9197', '3509', '4055', 'd']

on2129c8377T50992323afW6123X91973509