... B
(10 8) A
(14 8)
B
(18 8) C
(29)
B
(69)
A
(10 9) C
(14 9) C
(18 9)
A
(30) C
(70) D
(11 0) A
(15 0) B
(19 0)
D
( 31)
B
( 71) B
(11 1)
B
(15 1)
C
(19 1)
B
...
(60) C
(10 0) B
(14 0) C
(18 0)
D
( 21) A
( 61) D
(10 1)
C
(14 1)
B
(18 1)
B
(22) B
(62) A
(10 2) D
(14 2) C
(18 2) C
(23)...