( 8 - ( - 9 ) ) + ( - 6 ) = |
|   | 3 + ( ( - 1 ) - ( - 6 ) ) = |
|
9 + ( ( - 3 ) - ( - 8 ) ) = |
|   | |
6 + ( ( - 6 ) - ( - 9 ) ) = |
|   | ( ( - 6 ) - ( - 3 ) ) + ( - 3 ) = |
|
( ( - 1 ) + ( - 2 ) ) + ( - 6 ) = |
|   | ( ( - 6 ) + 3 ) - ( - 8 ) = |
|
( ( - 7 ) - ( - 3 ) ) + ( - 3 ) = |
|   | ( ( - 4 ) - 2 ) + ( - 8 ) = |
|
|   | ( - 2 ) + ( ( - 6 ) + ( - 7 ) ) = |
|
4 - ( ( - 9 ) + ( - 8 ) ) = |
|   | |
( - 1 ) + ( ( - 8 ) - ( - 4 ) ) = |
|   | ( 3 + ( - 9 ) ) - ( - 6 ) = |
|