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: 14, 20, ['G', '4851', '5265', 'I', 'r', '4551', '4451', '5395', 'L', '6043', 'W', 'Q', 'Z', '2053', '5437', 'R', '7283', 'W', 'u', 'q', 'x', '9385', '7105', 'R', '9423', '9427', 'f']

20535437R7283Wuq