||--------------------------16--15 ||-------------------------------- ||--6-6--------------------------- ||--6-6----7-7----9-9------------- ||--4-4----7-7----9-9------------- ||--------- 5-5----7-7------------- ||-------------------------- ||-------------------------- ||-------------------------- ||-------------------------- x4 ||-------------4---4-6-7-6-4 ||-5-4-5-7-5-7---7---------- ||-15-18--16-13-15-----15-18-16-18-15 ||----------------------------------- ||----------------------------------- ||----------------------------------- ||----------------------------------- ||-----------------------------------