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, 13, ['O', 'h', '5273', '7859', 'Y', '4007', 'w', 'J', 'O', '1239', 'b', 'r', '2321', 'O', '2729']

h52737859Y4007wJO1239br2321