|-------------------------------|
|-------------------------------|
|--5-5-5/7-7\5-5----------------|
|--x-x-x/x-x\x-x--5-5-5-5-5-5---|
|--3-3-3/5-5\3-3--5-5-5-5-5-5---|
|-----------------3-3-2-2-3-3---|

|-------------------------------|
|-------------------------------|
|--5-5-5/7-7\5-5--7-7-7-7-7-7---|
|--x-x-x/x-x\x-x--7-7-7-7-7-7---|
|--3-3-3/5-5\3-3--5-5-5-5-5-5---|
|-----------------5-5-4-4-5-5---|

|-----------------------------------------------------|
|-----------------------------------------------------|
|-5-5-5-5-5-5-5---------------------------------------|
|-5-5-5-5-5-5-5--5-5-5-5-5-5-5--7-7-7-7-7-7-7-5-5-5---|
|-3-3-2-2-3-3-3--5-5-5-5-5-5-5--7-7-7-7-7-7-7-5-5-5---|
|----------------3-3-2-2-3-3-3--5-5-5-5-4-4-4-3-3-3---|