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, 10, ['1387', '3869', '3555', 's', '9835', '9651', 'O', '7245', 'D', '7909', '6743', 'R', '953', '275', 'n', 'A']

9651O7245D7909