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: 15, 21, ['1269', '7597', '1559', '4137', 'U', 'W', '4725', 'i', '4431', '8213', 'i', 'e', '4311', '5749', 'Z', 'C', '4087', '119', 'E', 'n', '9239', '5711', 'R', '8911', 'C']

ZC4087119En9239