@ ProgramNode (location: (0...36))
├── locals: []
└── statements:
    @ StatementsNode (location: (0...36))
    └── body: (length: 1)
        └── @ CaseNode (location: (0...36))
            ├── predicate:
            │   @ ArrayNode (location: (5...14))
            │   ├── elements: (length: 3)
            │   │   ├── @ IntegerNode (location: (6...7))
            │   │   │   └── flags: decimal
            │   │   ├── @ IntegerNode (location: (9...10))
            │   │   │   └── flags: decimal
            │   │   └── @ IntegerNode (location: (12...13))
            │   │       └── flags: decimal
            │   ├── opening_loc: (5...6) = "["
            │   └── closing_loc: (13...14) = "]"
            ├── conditions: (length: 1)
            │   └── @ InNode (location: (15...32))
            │       ├── pattern:
            │       │   @ ArrayPatternNode (location: (18...25))
            │       │   ├── constant: ∅
            │       │   ├── requireds: (length: 2)
            │       │   │   ├── @ IntegerNode (location: (19...20))
            │       │   │   │   └── flags: decimal
            │       │   │   └── @ IntegerNode (location: (22...23))
            │       │   │       └── flags: decimal
            │       │   ├── rest: ∅
            │       │   ├── posts: (length: 0)
            │       │   ├── opening_loc: (18...19) = "["
            │       │   └── closing_loc: (24...25) = "]"
            │       ├── statements:
            │       │   @ StatementsNode (location: (28...32))
            │       │   └── body: (length: 1)
            │       │       └── @ TrueNode (location: (28...32))
            │       ├── in_loc: (15...17) = "in"
            │       └── then_loc: ∅
            ├── consequent: ∅
            ├── case_keyword_loc: (0...4) = "case"
            └── end_keyword_loc: (33...36) = "end"
