There are three types of arrows used to draw this figure:
FULL: fd 40 rt 15 bk 8 fd 8 lt 30 bk 8 fd 8 rt 15 pu fd 5 pd
RIGHT: fd 20 rt 90 fd 20 rt 15 bk 8 fd 8 lt 30 bk 8 fd 8 rt 15 pu fd 5 pd
LEFT: fd 20 lt 90 fd 20 rt 15 bk 8 fd 8 lt 30 bk 8 fd 8 rt 15 pu fd 5 pd
All you have to do is link them to make this image. The end (bottom) 
of the red arrow
is at (0,0).