ot6r13 pt6r qt6r1 rt6r13 st6r

dk7r ek7r1 fk7r13 gk7r hk7r1

2a8r1 3a8r13 4a8r 5a8r1 6a8r13

r18r13 s18r t18r1 u18r13 v18r

gs9r hs9r1 is9r13 js9r ks9r1