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: 1, 18, ['W', '9823', 'L', '151', 'F', '7583', 'k', '6889', '8171', '4759', 'E', 'G', '1063', 'A', '4367', '9895', '8463', 'E', '7469', '5157', 'u', '3929', 'W', 'C', 'a', 'U', '8109']

W9823L151F7583k688981714759EG1063A436798958463E