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: 2, 7, ['4887', 'B', '4929', '6867', '1123', '3655', '781', 'T', '6327', '7963', 'k', 'l', 'n', '5575', '9255', 'j', 't']

B4929686711233655781