4x                                                                                                                                                                                                                                                                |-----------------15---------14-------|
|-----15------------------------------|
|---------14--12------14--------14-|
|---12-------------------------------|
|-------------------------------------|
|-------------------------------------|

 2x

|------------------15--------14------|
|------15-----------------------------|
|---------14--12--------14------14-|
|---14--------------------------------|
|-------------------------------------|
|-------------------------------------|

2x

|----------------------15----------14-------|
|---------15---------------------------------|
|-----12-------14--12--------14--------14|
|--------------------------------------------|
|--------------------------------------------|
|--------------------------------------------|

2x

|---------------------15-------14-----|
|-------15-----------------------------|
|-----------14--12--------14------14-|
|----12--------------------------------|
|---------------------------------------|
|---------------------------------------|