┌─VOLCA_Vocar.0001s0053.1
──────────────────────────┤                                                   ┌─VOLCA_Vocar.0021s0061.1
                          │                         ┌─────────────────────────┤
                          └─────────────────────────┤                         └─VOLCA_Vocar.0021s0062.1
                                                    └─VOLCA_Vocar.0011s0338.1