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: 6, 16, ['4507', '6539', '4799', 'q', 'w', 'm', '6737', '9661', '6833', 'm', '6467', '1789', '4173', '9091', '9139', '1927', 'g', '1221']

m673796616833m646717894173909191391927