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: 10, 21, ['H', '2905', 'b', '7489', 'I', '529', 'J', 'z', 'v', 'l', 'g', '3619', 't', 'a', '2249', 'j', 'r', 'c', '3891', 'B', '8433', '2029', 'Z', '7851', 'D', 'R', 'V', 'l', '7261', '7515']

lg3619ta2249jrc3891B8433