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: 2, 20, ['437', 'Q', 'f', '3853', 'S', 'r', 'W', '4735', '1207', '5291', 'F', '6053', '3163', '9717', 'g', 'G', '2199', 'F', 'v', '6507', '6343', '8965', '8605', '9501', '3303', '5823']

Qf3853SrW473512075291F605331639717gG2199Fv6507