(CommandList
  children: [
    (Sentence
      child: 
        (Assignment
          keyword: Assign_None
          pairs: [(assign_pair lhs:(LhsName name:x) op:Equal rhs:{(1)} spids:[13])]
          spids: [13]
        )
      terminator: <Op_Semi ";">
    )
    (Sentence
      child: 
        (Assignment
          keyword: Assign_None
          pairs: [(assign_pair lhs:(LhsName name:y) op:Equal rhs:{(2)} spids:[17])]
          spids: [17]
        )
      terminator: <Op_Semi ";">
    )
    (Assignment
      keyword: Assign_None
      pairs: [(assign_pair lhs:(LhsName name:z) op:Equal rhs:{(3)} spids:[21])]
      spids: [21]
    )
    (Subshell
      child: 
        (CommandList
          children: [
            (Sentence child:(C {(builtin)} {(cd)} {(.)}) terminator:<Op_Semi ";">)
            (Sentence
              child: 
                (Assignment
                  keyword: Assign_None
                  pairs: [
                    (assign_pair
                      lhs: (LhsName name:x)
                      op: Equal
                      rhs: 
                        {
                          (CommandSubPart
                            command_list: 
                              (CommandList
                                children: [(C {(builtin)} {(echo)} {(Lit_Other "*")})]
                              )
                            left_token: <Left_Backtick "`">
                            spids: [34 40]
                          )
                        }
                      spids: [33]
                    )
                  ]
                  spids: [33]
                )
              terminator: <Op_Semi ";">
            )
            (Subshell child:(C {(builtin)} {(echo)} {(DQ (ho))}) spids:[4351])
          ]
        )
      spids: [24 53]
    )
    (Case
      to_match: 
        {
          (CommandSubPart
            command_list: 
              (CommandList
                children: [
                  (Sentence
                    child: (C {(builtin)} {(echo)} {(DQ (testing))})
                    terminator: <Op_Semi ";">
                  )
                  (C {(builtin)} {(echo)} {(1) (Lit_Comma ",") (2) (Lit_Comma ",") (3)})
                ]
              )
            left_token: <Left_Backtick "`">
            spids: [57 76]
          ) (Lit_Comma ",") 
          (CommandSubPart
            command_list: 
              (CommandList
                children: [(C {(builtin)} {(echo)} {(1) (Lit_Comma ",") (2) (Lit_Comma ",") (3)})]
              )
            left_token: <Left_Backtick "`">
            spids: [78 88]
          )
        }
      arms: [
        (case_arm
          pat_list: [{(Lit_Other "*") (c) (Lit_Other "*") (Lit_Comma ",") (-n) (Lit_Other "*")}]
          action: [
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:ECHO_N)
                  op: Equal
                  rhs: {(SQ )}
                  spids: [101]
                )
                (assign_pair
                  lhs: (LhsName name:ECHO_C)
                  op: Equal
                  rhs: {(SQ <"\n">)}
                  spids: [103]
                )
                (assign_pair
                  lhs: (LhsName name:ECHO_T)
                  op: Equal
                  rhs: {(SQ <"\t">)}
                  spids: [108]
                )
              ]
              spids: [101]
            )
          ]
          spids: [93 99 113 -1]
        )
        (case_arm
          pat_list: [{(Lit_Other "*") (c) (Lit_Other "*") (Lit_Comma ",") (Lit_Other "*")}]
          action: [
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:ECHO_N)
                  op: Equal
                  rhs: {(-n)}
                  spids: [124]
                )
                (assign_pair
                  lhs: (LhsName name:ECHO_C)
                  op: Equal
                  rhs: {(SQ )}
                  spids: [127]
                )
                (assign_pair
                  lhs: (LhsName name:ECHO_T)
                  op: Equal
                  rhs: {(SQ )}
                  spids: [129]
                )
              ]
              spids: [124]
            )
          ]
          spids: [116 122 131 -1]
        )
        (case_arm
          pat_list: [{(Lit_Other "*")}]
          action: [
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:ECHO_N)
                  op: Equal
                  rhs: {(SQ )}
                  spids: [137]
                )
                (assign_pair
                  lhs: (LhsName name:ECHO_C)
                  op: Equal
                  rhs: {(SQ <"\\c">)}
                  spids: [139]
                )
                (assign_pair
                  lhs: (LhsName name:ECHO_T)
                  op: Equal
                  rhs: {(SQ )}
                  spids: [144]
                )
              ]
              spids: [137]
            )
          ]
          spids: [134 135 146 -1]
        )
      ]
      spids: [55 90 148]
    )
    (Subshell
      child: 
        (CommandList
          children: [
            (Sentence child:(C {(builtin)} {(cd)} {(.)}) terminator:<Op_Semi ";">)
            (Sentence
              child: 
                (Assignment
                  keyword: Assign_None
                  pairs: [
                    (assign_pair
                      lhs: (LhsName name:x)
                      op: Equal
                      rhs: 
                        {
                          (CommandSubPart
                            command_list: 
                              (CommandList
                                children: [(C {(builtin)} {(echo)} {(Lit_Other "*")})]
                              )
                            left_token: <Left_Backtick "`">
                            spids: [161 167]
                          )
                        }
                      spids: [160]
                    )
                  ]
                  spids: [160]
                )
              terminator: <Op_Semi ";">
            )
            (Subshell child:(C {(builtin)} {(echo)} {(DQ (ho))}) spids:[170178])
          ]
        )
      spids: [151 180]
    )
    (Sentence
      child: 
        (Assignment
          keyword: Assign_None
          pairs: [(assign_pair lhs:(LhsName name:x) op:Equal rhs:{(5)} spids:[183])]
          spids: [183]
        )
      terminator: <Op_Semi ";">
    )
    (Sentence
      child: 
        (Assignment
          keyword: Assign_None
          pairs: [(assign_pair lhs:(LhsName name:y) op:Equal rhs:{(6)} spids:[187])]
          spids: [187]
        )
      terminator: <Op_Semi ";">
    )
  ]
)