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: 9, 28, ['2931', '7025', 'x', 'B', '1963', '6981', 'O', 'x', 's', 'y', 'W', 'k', '1603', 'e', 'p', 'V', '9263', '3757', '6859', 'F', '935', 'C', '6771', '9133', '8047', 'F', '1553', '3515']

syWk1603epV926337576859F935C677191338047F15533515