Supernova tree:
c>sn1>m1>rp1>s1>sn2>bh1>m2>qol1>t1>bh2>qol2>s2>s3>qol3>chal1>sn3>s4>chal2>chal3>chal4>gr1>chal4a>sn4>qol4>bs1>qol5>bs2>bs3>qol6>chal5>gr2>bs4>fn1>fn3>fn2>fn4>fn5>m3>fn6>qol7>d1>unl1>rad1>rad2>qol8>rad3>chal6>fn7>qol9>rad4>fn8>fn9>rad5>chal7