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:
2, 9, ['1421', 'M', '8603', '9763', 'n', '123', 'W', '9241', 'I', 'i', 'u', '6919', '9825', 'I', 'm', '4497', 'J', 'R', '529', '3811']
answer:
M, u, 3811


question:
1, 2, ['s', 'y', 'J', 'P', '9871', '985', 'V', '7557', '8347', 'a', 'F', 'E']
answer:
s, J, 9871, V, 8347, F


question:
4, 6, ['8365', '6099', '3835', '5801', '517', '5335', '5779', 'E', '7563', '7433', '477', '6445', 'K', '3561', 'j', 'r', 'y', 'N', '6739', '8863']
answer:

5801, 7433, r