ORDER 1:
------------14--------------------14--16--14----------|--------18------14------------18--------------18------|----15--------------15----15--------------------------|------------------------------------------------------|------------------------------------------------------|------------------------------------------------------|ORDER 2:
------------------------------------------------------|----------4-------------------------------------------|-------6----------------------------------------------|----4-------------------------------------------------|------------------------------------------------------|------------------------------------------------------|
ORDER 3:
------------14--------------------14--16--------------|--------18------14------------18----------------------|----15--------------15----15--------------------------|------------------------------------------------------|------------------------------------------------------|------------------------------------------------------|ORDER 4:
------------------------------------------------------|--------------16--------------------------------------|----15---15--------15---------------------------------|------------------------------------------------------|------------------------------------------------------|------------------------------------------------------|
play the orders this way...
1. ORDER 1
2. ORDER 2
3. ORDER 3
4. ORDER 2
5. ORDER 1
6. ORDER 2
7. ORDER 1
8. ORDER 2
9. ORDER 1
10.ORDER 2
11.ORDER 1
12.ORDER 2
13.ORDER 3
14.ORDER 2