It's amazing how I manage to *bump* essential threads.
Anyway, this should be quite easy.
Code:
|---3--|
--15--11h-15-11-------------------------------------|
----------------13----------13----15----16----15----|
-------------------12----12----12----12----12----12-|
----------------------13----------------------------|
----------------------------------------------------|
----------------------------------------------------|
|---3---|
-----------------------/20~-L--------|--18b----15h-18p-15------------------|
--13----15----16-15-13---------------|--------------------16---------------|
-----12----12------------------------|-----------------------15-17~--------|
-------------------------------------|-------------------------------------|
-------------------------------------|-------------------------------------|
-------------------------------------|-------------------------------------|
|---3--| |--3--|
-----------------13-17-13S-19p-16--------------------||
----------------------------------17-----------------||
--17-14----14-17---------------------16--------------||
--------15------------------------------18-----------||
-------------------------------------------19-14~----||
-----------------------------------------------------||
Anyway, this should be quite easy.