● 2-1
○ 2-3
○ 1-2
△ 2-2
○ 1-2
● 3-2
△ 1-1
● 4-1
● 2-1
△ 2-2
△ 1-1
○ 1-4
● 2-1
○ 2-3
○ 1-2
△ 2-2
○ 1-2
● 3-2
△ 1-1
● 4-1
● 2-1
△ 2-2
△ 1-1
○ 1-4