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, 11, ['u', '6803', 'x', '7837', 'O', '6691', '1183', '8475', 'U', '2417', '8525']

6803x7837O669111838475U24178525