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: 3, 13, ['3837', '3757', '555', 'L', 'G', '9959', 'U', '4889', 'm', 'A', '9509', '9883', '2399', '2131']

555LG9959U4889mA950998832399