solo
--5^-(5)-5-3-0-----|--------------------------|-15-12-------------------|
--------------3-0--|-----0-3/12----15^-(15)---|--------15-12------------|
-----------------2^|-(2)--------------------14|---------------14^v-12---|
-------------------|--------------------------|-----------------------14|
-------------------|--------------------------|-------------------------|
-------------------|--------------------------|-------------------------|
-----------3-5-----|------------------------|---------------------|---------------
-------5-5-----5-3-|-5^-5^-(5)-5^v-0-3-5-3-0|---------------------|-3-------------
-12-14-------------|------------------------|-2^-(2)-2-0---0-2-4-4|---4-4-2-0-----
-------------------|------------------------|------------2--------|-----------2-0-
-------------------|------------------------|---------------------|---------------
-------------------|------------------------|---------------------|---------------