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