Flowchart: Five Parallel Edges with Reciprocals (LR)
Three edges one way and two back between the same two nodes in a left-to-right graph (#1826). In the ASCII panel the reciprocals share the group and each edge keeps its own arrowhead.
flowchart-five-parallel-edges-with-reciprocals-lr.mmd
flowchart LR
A -->|first| B
A -->|second| B
A -->|third| B
B -->|back one| A
B -->|back two| A