def group_chains_zip
import bend-prot@0.1.0.0/pdb.bend as Pdbimport Base
import bend-prot@0.1.0.0/protein.bend as P
419def group_chains_zip(items: List<&1, U32 & P.Residue>) -> List<&2, P.Chain>:
420 match items:
421 case Nil{}:
422 Nil{}
423 case (c, r) <> t:
424 group_chain_go(t, c, [r], Nil{})