### GW

#                                    
#                                    grave 
#                                      |
#                                     [s1]
#                                      |
#                                   immortal
#                                      |
#                                     [s2]
#                                     /  \
#                                 opeth  syl
#                                   
#
#

SWITCH s1
SWITCH s2
HOST debian  immortal s1 s2
HOST debian  opeth    s2       
HOST debian  syl      s2
HOST debian  grave    s1