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: 4, 20, ['I', 'W', '5635', 'L', 'x', 't', 'r', '4453', 'D', '865', 'O', 'n', '1783', 'i', '4427', '755', '4837', 'L', '2565', 'F', 'N', 'b', 'i']

Lxtr4453D865On1783i44277554837L2565F