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, 12, ['635', 'k', 's', '6389', '197', '4113', '3109', 'D', 't', '2813', '3405', '3417', '8601', '163', '4325', 'm', '5331']

ks638919741133109Dt281334053417