(CommandList
  children: [
    (Assignment
      keyword: Assign_None
      pairs: [(assign_pair lhs:(LhsName name:i) op:Equal rhs:{(0)} spids:[4])]
      spids: [4]
    )
    (Assignment
      keyword: Assign_None
      pairs: [
        (assign_pair
          lhs: (LhsName name:file)
          op: Equal
          rhs: {(/dev/media) ($ VSub_Number "$1")}
          spids: [7]
        )
      ]
      spids: [7]
    )
    (While
      cond: [(Sentence child:(C {(Lit_Other ":")}) terminator:<Op_Semi ";">)]
      body: 
        (DoGroup
          children: [
            (C {(echo)} {($ VSub_Name "$file")})
            (Assignment
              keyword: Assign_None
              pairs: [
                (assign_pair
                  lhs: (LhsName name:i)
                  op: Equal
                  rhs: 
                    {
                      (ArithSubPart
                        anode: 
                          (ArithBinary
                            op_id: Arith_Plus
                            left: (ArithVarRef name:i)
                            right: (ArithWord w:{(Lit_Digits 1)})
                          )
                        spids: [26 31]
                      )
                    }
                  spids: [25]
                )
              ]
              spids: [25]
            )
            (Sentence
              child: 
                (Assignment
                  keyword: Assign_None
                  pairs: [
                    (assign_pair
                      lhs: (LhsName name:R)
                      op: Equal
                      rhs: 
                        {
                          (CommandSubPart
                            command_list: 
                              (CommandList
                                children: [(C {(./media_device_open)} {(-d)} {($ VSub_Name "$file")})]
                              )
                            left_token: <Left_CommandSub "$(">
                            spids: [35 41]
                          )
                        }
                      spids: [34]
                    )
                  ]
                  spids: [34]
                )
              terminator: <Op_Semi ";">
            )
            (C {(echo)} {(-e)} 
              {
                (DQ ("Loop ") ($ VSub_Name "$i") (EscapedLiteralPart token:<Lit_EscapedChar "\\n">) 
                  ($ VSub_Name "$R")
                )
              }
            )
          ]
          spids: [17 61]
        )
    )
  ]
)