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: 13, 20, ['5113', 'q', 'B', 'm', '4221', 'J', 'u', 'j', '6785', '3821', '1765', '457', 'N', '1645', '6869', 'Y', 'n', 'E', 'C', '9153', 'Z', '1027']

N16456869YnEC9153