SOURCE_FILE@0..118
  FN@0..117
    FN_KW@0..2 "fn"
    WHITESPACE@2..3 " "
    NAME@3..7
      IDENT@3..7 "main"
    PARAM_LIST@7..9
      L_PAREN@7..8 "("
      R_PAREN@8..9 ")"
    WHITESPACE@9..10 " "
    BLOCK_EXPR@10..117
      L_CURLY@10..11 "{"
      WHITESPACE@11..16 "\n    "
      LET_STMT@16..31
        LET_KW@16..19 "let"
        WHITESPACE@19..20 " "
        BOX_PAT@20..25
          BOX_KW@20..23 "box"
          WHITESPACE@23..24 " "
          IDENT_PAT@24..25
            NAME@24..25
              IDENT@24..25 "i"
        WHITESPACE@25..26 " "
        EQ@26..27 "="
        WHITESPACE@27..28 " "
        TUPLE_EXPR@28..30
          L_PAREN@28..29 "("
          R_PAREN@29..30 ")"
        SEMICOLON@30..31 ";"
      WHITESPACE@31..36 "\n    "
      LET_STMT@36..87
        LET_KW@36..39 "let"
        WHITESPACE@39..40 " "
        BOX_PAT@40..81
          BOX_KW@40..43 "box"
          WHITESPACE@43..44 " "
          RECORD_PAT@44..81
            PATH@44..49
              PATH_SEGMENT@44..49
                NAME_REF@44..49
                  IDENT@44..49 "Outer"
            WHITESPACE@49..50 " "
            RECORD_PAT_FIELD_LIST@50..81
              L_CURLY@50..51 "{"
              WHITESPACE@51..52 " "
              RECORD_PAT_FIELD@52..57
                BOX_PAT@52..57
                  BOX_KW@52..55 "box"
                  WHITESPACE@55..56 " "
                  IDENT_PAT@56..57
                    NAME@56..57
                      IDENT@56..57 "i"
              COMMA@57..58 ","
              WHITESPACE@58..59 " "
              RECORD_PAT_FIELD@59..79
                NAME_REF@59..60
                  IDENT@59..60 "j"
                COLON@60..61 ":"
                WHITESPACE@61..62 " "
                BOX_PAT@62..79
                  BOX_KW@62..65 "box"
                  WHITESPACE@65..66 " "
                  TUPLE_STRUCT_PAT@66..79
                    PATH@66..71
                      PATH_SEGMENT@66..71
                        NAME_REF@66..71
                          IDENT@66..71 "Inner"
                    L_PAREN@71..72 "("
                    BOX_PAT@72..78
                      BOX_KW@72..75 "box"
                      WHITESPACE@75..76 " "
                      REF_PAT@76..78
                        AMP@76..77 "&"
                        IDENT_PAT@77..78
                          NAME@77..78
                            IDENT@77..78 "x"
                    R_PAREN@78..79 ")"
              WHITESPACE@79..80 " "
              R_CURLY@80..81 "}"
        WHITESPACE@81..82 " "
        EQ@82..83 "="
        WHITESPACE@83..84 " "
        TUPLE_EXPR@84..86
          L_PAREN@84..85 "("
          R_PAREN@85..86 ")"
        SEMICOLON@86..87 ";"
      WHITESPACE@87..92 "\n    "
      LET_STMT@92..115
        LET_KW@92..95 "let"
        WHITESPACE@95..96 " "
        BOX_PAT@96..109
          BOX_KW@96..99 "box"
          WHITESPACE@99..100 " "
          IDENT_PAT@100..109
            REF_KW@100..103 "ref"
            WHITESPACE@103..104 " "
            MUT_KW@104..107 "mut"
            WHITESPACE@107..108 " "
            NAME@108..109
              IDENT@108..109 "i"
        WHITESPACE@109..110 " "
        EQ@110..111 "="
        WHITESPACE@111..112 " "
        TUPLE_EXPR@112..114
          L_PAREN@112..113 "("
          R_PAREN@113..114 ")"
        SEMICOLON@114..115 ";"
      WHITESPACE@115..116 "\n"
      R_CURLY@116..117 "}"
  WHITESPACE@117..118 "\n"