-------------------0---------------------| 2 times-----1------3------------1---------------|-----------------------------------------|-----------------------------------------|-----------------------------------------|-----------------------------------------|
------0-------1------3-------------------|-----------------------------------------| 2 times-----------------------------------------|-----------------------------------------|-----------------------------------------|-----------------------------------------|
-----3------5-----3-----1-----0----------| 2 times------------------------------------1----|-----------------------------------------|-----------------------------------------|-----------------------------------------|-----------------------------------------|
-----------------------------------------| 2 times-----3------0-------1--------------------|-----------------------------------------|-----------------------------------------|-----------------------------------------|-----------------------------------------|
