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: 8, 12, ['D', '9915', 'H', 'u', '3919', '9379', '7809', '3669', '1375', 'I', '7399', '4389', '2603', 'u', 'j', '1065', '647', 'e', 'b']

36691375I73994389