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|2| |3| 4 |4| 

|4| 4 |3| |2| 

|3| |2| 2 |3| 

|4| 4 |3| |4| 

| 5 |4| 5 |4| 

|1| 2 3 2 |2| 

6 |5| |4| 4 |3| 3 

|4||5| 6 |6| 

|6| 6 |5| |4|