[
  {"id": "R01", "config": {"[0]": "first-literal-key", "items": ["alpha"]}},
  {"id": "R02", "config": {"[0]": "second-literal-key", "items": ["beta", "gamma"]}},
  {"id": "R03", "config": {"[0]": "third-literal-key", "items": ["delta"]}},
  {"id": "R04", "config": {"[0]": "fourth-literal-key", "items": ["epsilon", "zeta"]}},
  {"id": "R05", "config": {"[0]": "fifth-literal-key", "items": ["eta"]}},
  {"id": "R06", "config": {"[0]": "sixth-literal-key", "items": ["theta", "iota"]}}
]