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: 13, 19, ['9903', '6303', '6873', 'y', '31', '6037', '7011', 'Z', '3193', '5575', '1623', 'u', '3817', 't', 'F', '6319', '8157', '581', '3991', '7135', '1557', 'C', '2961', 'F', 'B']

3817tF631981575813991