12
● ○ ○ ○ o o o o ● ○ ○ ● ● ● ● ● ● ○ ○ ○ ○ ○ ● ○ ○ ● ● ○ ○
●
○
○
○
o
o
o
o
●
○
○
●
●
●
●
●
●
○
○
○
○
○
●
○
○
●
●
○
○
●
●
●
●
●
●
●
●
●
●
●
●
○
○
○
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
● ×
● ×
● × × ×
×
● ×
×
● ×
×
●
●
●
● 1
2
●
● 1
2
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
○
○
○
○
○
●
○
○
○
○
○
○
○
●
●
●
●
●
●
●
●
●
●
● ●
○
○
○
○
○
○
○
● ●
● ●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
● ●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
● ●
●
●
○
○
○
○
○
●
●
○
○
○
●
●
●
●
●
●
●
○
○
○
○
○
●
○
○
○
○
○
○
○
○
○
●
●
●
●
●
●
●
●
●
●
○
○
○
○
○
○
●
●
○
○
○
○
●
●
○
○
○
○
●
●
○
○
○
●
●
○
○
○
○
●
●
○
○
○
●
○
○
○
○
○
●
○
○
○
○
● ●
●
●
●
●
●
●
●
●
●
●
●
●
●
● ●
● ●
