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, 20, ['6321', '8465', '2149', '763', '6673', '4537', 'e', '7015', 'D', '3603', '8923', '2289', '3251', '2857', 'L', '5887', '6521', '7615', '235', 'V', '5551', 'V', '5127', '6743', '8281', '4365', '3747', 'A']

7015D36038923228932512857L588765217615235V