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: 11, 19, ['r', 'a', 'D', '9937', '2787', '3881', '6897', '6085', '3261', 'F', '3499', 'a', '49', '3189', 'E', '5881', 'R', '3023', 'e', '903', 'U', '3847', 'U', '7313', '4093', '1887', '6973', '777', 'm']

3499a493189E5881R3023e