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: 3, 6, ['W', 'u', 'H', 'p', '439', 'X', 'T', '6909', 'T', '6933', '3829', '8227', '3565', 'E', 'F', 's', '1615', 'L']

Hp439X