species_1 + species_2 + species_3 + species_4 + species_6 + species_7 + species_8 <-> species_5
species_10 + species_9 <-> species_11
species_11 + species_12 <-> species_13
species_14 -> species_15
species_15 -> species_14
species_1 + species_16 + species_17 + species_18 + species_3 + species_4 + species_53 + species_8 <-> species_52
species_19 -> species_20
species_20 -> species_19
species_20 <-> species_21
2*species_21 -> 2*species_21 + species_24
species_22 -> species_24
species_24 -> species_23
species_16 + species_24 + species_25 + species_26 + species_27 <-> species_28
species_14 -> species_15
species_29 + species_31 <-> species_30
species_15 + species_30 <-> species_32
species_31 + species_33 <-> species_34
species_15 + species_34 <-> species_35
species_31 + species_36 <-> species_37
species_15 + species_37 <-> species_38
species_32 -> species_15 + species_31
species_35 -> species_15 + species_31
species_38 -> species_15 + species_31
species_30 -> species_31
species_34 -> species_31
species_37 -> species_31
species_31 <-> species_39
species_39 + species_40 <-> species_41
species_39 + species_42 <-> species_43
species_39 + species_44 <-> species_45
species_22 -> species_46
2*species_39 -> 2*species_39 + species_46
species_46 -> species_23
species_22 -> species_47
species_47 -> species_23
species_22 -> species_48
species_48 -> species_23
species_15 + species_29 <-> species_49
species_46 -> species_29 + species_46
species_29 -> species_23
species_29 <-> species_40
species_15 + species_33 <-> species_50
species_47 -> species_33 + species_47
species_33 -> species_23
species_33 <-> species_42
species_15 + species_36 <-> species_51
species_48 -> species_36 + species_48
species_36 -> species_23
species_36 <-> species_44
species_31 + species_49 <-> species_32
species_41 -> species_30
species_31 + species_50 <-> species_35
species_43 -> species_34
species_31 + species_51 <-> species_38
species_45 -> species_37
species_49 -> species_15
species_50 -> species_15
species_51 -> species_15
2*species_39 -> species_24 + 2*species_39