...
(41) A
(81) A
( 121 ) C
(161) D
(2) A
( 42)
B
( 82)
D
( 122 )
C
(1 62)
C
(3) C
(43)
D
(83)
B
( 123 )
D
(163) D
(4) D
(44)
B
(84) D
( 124 ) B
(164)
B
...
D
(179)
C
(20 )
C
(60) C
(100) B
(140) C
(180)
D
(21 ) A
(61) D
(101)
C
(141)
B
(181)
B
(22 ) B
( 62) A
(1 02) D
(1 42) C
(1 82) C...