|-------------------------------------|
|-------------------------------------|
|-------------7---4----4------5-------|
|-----5-5-7-7-------5----5------7-4-5-|
|-5-5----------------------7----------|
|-------------------------------------|

|-------------------------------------|
|-------------------------------------|
|-----4-4-4-5-4-4-------4-5-5-5-7-5-4-|
|-5-7-------------7---7---------------|
|-------------------------------------|
|-------------------------------------|

|-------------------------------------|
|-------------------------------------|
|-7-7-7-4---7-4-----5-----------------|
|---------5-----5------7-4-5----------|
|-----------------7-------------------|
|-------------------------------------|