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, 12, ['t', 'X', 'f', '3305', '1855', '6563', 'X', 'Z', 'U', '7099', 'o', '7821', 'E', 'F', 'M', '5949']

330518556563XZU7099o7821