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: 13, 21, ['D', '7979', '9123', 'H', '3687', '1663', 'A', 'Q', 'v', 'h', '9813', 'u', '767', '5275', '5563', 'Z', '7313', 'e', 'W', 'd', 'O', 'D', 'I', '5497', '1745', 'E', 'D', 'x', 'T', 'r']

76752755563Z7313eWdO