species_1 -> species_2 species_3 -> species_2 species_4 -> species_5 species_5 -> species_4 species_5 -> species_6 species_7 -> species_4 species_2 -> species_7 species_2 -> species_8 species_9 -> species_10 species_7 -> species_2 species_12 -> species_7 species_7 -> species_13 species_13 -> species_7 species_16 -> species_10 species_7 -> species_17 species_19 -> species_18 species_18 -> species_20 species_17 -> species_7 species_17 -> species_21 species_21 -> species_7 species_21 -> species_23 species_23 -> species_7 species_23 -> species_7 species_23 -> species_11 species_23 -> species_11 species_26 -> species_25 species_25 -> species_27 species_11 -> species_28 species_28 -> species_11 species_11 -> species_29 species_10 + species_11 -> species_30 species_32 -> species_11 species_30 -> species_17 species_30 -> species_23 species_30 -> species_7