species_1 + species_25 <-> species_0 species_3 -> species_2 species_2 -> species_3 species_5 -> species_4 species_4 -> species_5 species_7 -> species_6 species_6 -> species_7 species_9 -> species_8 species_8 -> species_9 species_11 -> species_10 species_10 -> species_11 species_13 -> species_12 species_12 -> species_13 species_2 -> species_3 species_15 -> species_14 species_15 -> species_14 species_14 -> species_15 species_17 -> species_16 species_16 -> species_17 species_6 -> species_7 species_0 -> species_18 species_20 -> species_19 species_19 -> species_20 species_22 -> species_21 species_21 -> species_22 species_24 -> species_23 species_23 -> species_24 species_9 -> species_8 species_30 -> species_1 species_1 -> species_18 species_24 -> species_23