x.y.u.

|-----------------------------------------------
|-----------------------------------------------
|-15~---------------11~-------------------------
|-X-----------------X---------------------------
|-13~---------------9~--------------------------
|----0-0-0-0-0-0-0----0-0-0-0-0-0-0------------

*1 more distortion

|-----------------------------------------------
|-----------------------------------------------
|-15~---------------11~-------------------------
|-X-----------------X---------------------------
|-13~---------------9~--------------------------
|----0-0-0-0-0-0-0----0-0-0-0-0-0-0------------

|----------------------------------------------
|----------------------------------------------
|-15~---------------11~-------11/12-12-14--------
|-X-----------------X---------X-----X--X---------
|-13~---------------9~--------9-/10-10-12--------
|----0-0-0-0-0-0-0----0-0-0--------------------

*2

|----------------------------------------------
|----------------------------------------------
|-11---------------11--------------------------
|-X----------------X---------------------------
|-9----------------9--------------------------
|----0-0-0-0-0-0-0----0-0-0-0-0-0-0------------
^repeat

|----------------------------------------------
|----------------------------------------------
|-11---------------11-------11/12-12-11--------
|-X----------------X--------X-----X--X---------
|-9----------------9--------9-/10-10-9---------
|----0-0-0-0-0-0-0----0-0-0-------------------- 1