def angle_fan_both
import bend-prot@0.1.0.0/bonded.bend as Bondedimport Base
375def angle_fan_both(+a: U32, +b: U32, +flat: List<&2, U32>) -> List<&1, U32 & U32 & U32>:
376 append_triples(fan_triples(a, b, bond_neighbors_except(b, a, flat)), fan_triples(b, a, bond_neighbors_except(a, b, flat)))