|--------------------------------------------------|
|--------------------------------------------------|
|-6-6-6-6-----6-6-4-----------------4--------------|
|-6-6-6-6-----6-6-4---7-7-7-7---7-7-4--------------|
|-4-4-4-4-----4-4-2---7-7-7-7---7-7-2--------------|
|---------------------5-5-5-5---5-5----------------|
|--------------------------------------------------|
|--------------------------------------------------|
|-6-6-6-6-----6-6-4---------------4----------------|
|-6-6-6-6-----6-6-4---7-7-7-7-7-7-4----------------|
|-4-4-4-4-----4-4-2---7-7-7-7-7-7-2----------------|
|---------------------5-5-5-5-5-5------------------|