xa8s15 wa8s1 va8s ua8s15 ta8s1

8j7s1 7j7s 6j7s15 5j7s1 4j7s

jt6s it6s15 ht6s1 gt6s ft6s15

u25s15 t25s1 s25s r25s15 q25s1

5b5s1 4b5s 3b5s15 2b5s1 1b5s