+ 1
----------
+ 9
----------
+ 1
----------
+ 1
----------
+ 1
----------
+ 4
----------
+ 1
----------
+ 2
----------
+ 1
----------
+ 3
----------
+ 1
----------
+ 9
----------
+ 1
----------
+ 4
----------
+ 1
----------
+ 1
----------
|
|||
| 7 + 1 ---------- |
1 + 9 ---------- |
9 + 1 ---------- |
1 + 1 ---------- |
| 5 + 1 ---------- |
1 + 4 ---------- |
8 + 1 ---------- |
1 + 2 ---------- |
| 4 + 1 ---------- |
1 + 3 ---------- |
5 + 1 ---------- |
1 + 9 ---------- |
| 7 + 1 ---------- |
1 + 4 ---------- |
6 + 1 ---------- |
1 + 1 ---------- |
|
|||