TASK DEFINITION: In this task, you are given inputs k, i, and A, where k and i are integers and A is a list. You need to find every ith element of A starting from the kth element. The process stops when the position of the next ith element exceeds the length of the list.
PROBLEM: 1, 1, ['S', 'g', 'r']

SOLUTION: S, g, r

PROBLEM: 3, 5, ['6247', '9233', '7549', 't', '7185', 'U', 'P', 'd', '5633', '9813', 'f', '3891', 'b', '893', '9489', 'x', '7245', 'o', 'O', '3449', 'o', 'G', '1769', '1391']

SOLUTION: 7549, d, b, o, 1769

PROBLEM: 3, 13, ['7909', '2147', '5071', '7073', 'O', '7837', 'O', '6041', '3185', '1879', '7675', '219', '2755', '8333', '7057', '8125', '7375', 'i', '1487', 's', 'C', '537', '6165', 'I', '7767', '4391', 'f', 'S']

SOLUTION:
5071, 8125