x2
--------------|------------|-----14-14----11------------|----12-12-11--------------|
--12---11-12--|--12-12-----|------------------12-12-----|--------------12-12-------|
--------------|---------13-|-11----------------------13-|-11-----------------13----|
--------------|------------|----------------------------|--------------------------|
--------------|------------|----------------------------|--------------------------|
--------------|------------|----------------------------|--------------------------|

|-----14-14----11------------| |----12-12-11-------------------|----14-14-11-------------------|
|------------------12-12-----| |-------------12-12----12-12----|-------------12-12----12-12----|
|-11----------------------13-| |-11----------------13-------15-|-11----------------13-------15-|
|----------------------------| |-------------------------------|-------------------------------|
|----------------------------| |-------------------------------|-------------------------------|
|----------------------------| |-------------------------------|-------------------------------|