|-----------------------------------------------------------|
|----------1-------------1------------1--------------1------|
|--------0------------0------------0---------------0--------|
|-----------------------------------------------------------|
|--3------------3------------0----------------0-------------|
|-----------------------------------------------------------|
|-----------------------------------------------------------|
|----------1-------------1------------1--------------1------|
|-------0-------------0------------0-----------0---0--------|
|------------------------------------------------3----------|
|-----------------------------------------------------------|
|--3------------3---------------3---------------------------|