8a9sn 7a9s 6a9snw 5a9sn 4a9s
jk8s ik8snw hk8sn gk8s fk8snw
ut7snw tt7sn st7s rt7snw qt7sn
526sn 426s 326snw 226sn 126s
gc6s fc6snw ec6sn dc6s cc6snw