@ ProgramNode (location: (0...26))
├── locals: []
└── statements:
    @ StatementsNode (location: (0...26))
    └── body: (length: 1)
        └── @ CaseNode (location: (0...26))
            ├── predicate:
            │   @ IntegerNode (location: (5...6))
            │   └── flags: decimal
            ├── conditions: (length: 1)
            │   └── @ InNode (location: (7...22))
            │       ├── pattern:
            │       │   @ RangeNode (location: (10...15))
            │       │   ├── left:
            │       │   │   @ IntegerNode (location: (10...12))
            │       │   │   └── flags: decimal
            │       │   ├── right:
            │       │   │   @ IntegerNode (location: (14...15))
            │       │   │   └── flags: decimal
            │       │   ├── operator_loc: (12...14) = ".."
            │       │   └── flags: ∅
            │       ├── statements:
            │       │   @ StatementsNode (location: (18...22))
            │       │   └── body: (length: 1)
            │       │       └── @ TrueNode (location: (18...22))
            │       ├── in_loc: (7...9) = "in"
            │       └── then_loc: ∅
            ├── consequent: ∅
            ├── case_keyword_loc: (0...4) = "case"
            └── end_keyword_loc: (23...26) = "end"
