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: 7, 15, ['b', '7897', '1527', 'I', '7847', 'V', '3597', '4677', 'c', 'L', 'c', 'r', '3421', '6551', '5029', 'O']

35974677cLcr342165515029