instruction:
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.
question:
1, 1, ['n', 'x', 'L', '5393']
answer:
n, x, L, 5393


question:
1, 2, ['1959', '3457', '3407', '4127']
answer:
1959, 3407


question:
2, 4, ['c', 'W', 'A', 'H', 't', 'B', '4115', 'W', 'f', '6247', '2605', '9323', '3987', '7079', 'w', '6993', 's', '4605']
answer:

W, B, 6247, 7079, 4605