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                                              left_token: <Left_CommandSub '$('>
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                        (ForExpr
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                              left: (LhsName name:i)
                              right: (ArithWord w:{(Lit_Digits 1)})
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                                                    spids: [235 240]
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                        (Case
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                            (case_arm
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                              action: [(C {(_xfunc)} {(list_lists)} {(_mailman_lists)})]
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              spids: [16 19]
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      op_id: Op_DAmp
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