```ucm:hide
scratch/main> builtins.merge
```

```unison

lexicalScopeEx: [Text]
lexicalScopeEx =
  parent = "outer"
  inner1 = let
    child1 = "child1"
    inner2 : [Text]
    inner2 = let
      child2 = "child2"
      [parent, child1, child2]
    inner2
  inner1

```