|-------14-14-16-16-14-12-12-11-11-9-9-7-| <- x1!    |-14-14-12-12-11-11-9-|
|-12-12----------------------------------|           |---------------------|
|----------------------------------------|           |---------------------|
|----------------------------------------|           |---------------------|
|----------------------------------------|           |---------------------|
|----------------------------------------|           |---------------------|


                                                         

                                                               ^
                                                               |   x2!

|-------14-14-16-16-14-12-12-11-11-9-9-7-| <- x1! 
|-12-12----------------------------------|
|----------------------------------------|
|----------------------------------------|
|----------------------------------------|
|----------------------------------------|