+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+
| S   S   S | .   1   ?   F   A | A   .   2   P   . | S   S   S |
+   +   +   +   +---+   +---+   +   +---+---+---+   +   +   +   +
| S   S   S   . | A   .   A | P | 1 | A   .   A | .   S   S   S |
+   +   +   +   +   +   +   +   +   +   +   +   +   +   +   +   +
| S   S   S | ? | .   ?   . | 2 | .   .   ?   .   . | S   S   S |
+---+   +---+   +   +   +   +   +   +   +   +   +   +---+   +---+
| .   .   .   .   A   F   A | .   F | A   .   A | .   ?   .   . |
+   +---+   +---+---+---+   +   +   +   +---+---+   +---+---+   +
| P | A   .   A | .   ?   . | F | F   .   A   . | A   .   A | 1 |
+   +   +   +   +   +   +---+   +   +---+---+   +   +   +   +   +
| 2 | .   ?   . | A | A   .   ?   A   K   A   ? | F   ?   .   ? |
+   +   +   +   +   +   +   +---+---+---+   +   +   +   +   +   +
| . | A   .   A   . | K | D   D   D   D   . | .   A   .   A | F |
+   +---+   +---+   +   +   +   +   +   +   +---+---+---+---+   +
| A   1   .   F   F   A | D   D   D   D | ?   F   .   2   P   A |
+---+---+---+   +---+   +   +   +   +   +   +---+   +---+---+---+
| A   P   2   .   F   ? | D   D   D   D | A   F   F   .   1   A |
+   +---+---+---+---+   +   +   +   +   +   +   +---+   +---+   +
| F | A   .   A   . | .   D   D   D   D | K | .   A   .   A | . |
+   +   +   +   +   +   +---+---+---+   +   +   +   +   +   +   +
| ?   .   ?   F | ?   A   K   A   ?   .   A | A | .   ?   . | 2 |
+   +   +   +   +   +---+---+   +   +---+   +   +   +   +   +   +
| 1 | A   .   A | .   A   .   F | F | .   ?   . | A   .   A | P |
+   +---+---+   +---+---+   +   +   +   +---+---+---+   +---+   +
| .   .   ?   . | A   .   A | F   . | A   F   A   .   .   .   . |
+---+   +---+   +   +   +   +   +   +   +   +   +   +---+   +---+
| S   S   S | .   .   ?   .   . | 2 | .   ?   . | ? | S   S   S |
+   +   +   +   +   +   +   +   +   +   +   +   +   +   +   +   +
| S   S   S   . | A   .   A | 1 | P | A   .   A | .   S   S   S |
+   +   +   +   +---+---+---+   +   +---+   +---+   +   +   +   +
| S   S   S | .   P   2   .   A | A   F   ?   1   . | S   S   S |
+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+