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: 12, 13, ['z', 'Q', 'l', '8803', 'v', '4255', 'f', 'n', '6599', 'j', '4533', '9763', 'U', '4095', '4077', 'X', '3351']

9763U