(List
  (Pipeline
    (Com {[LIT_CHARS echo]} {[DQ [LIT_CHARS Hello]]}    )
    (Com {[VarSub 1]} {[VarSub 2]} {[VarSub 3]} {[LIT_CHARS pipe]} {[LIT_CHARS pipe]} {[LIT_CHARS pipe]}
      <
      (DescriptorRedirectNode target={[LIT_CHARS 1]} <REDIR_GREATAND "2>&"> 2),
      >
    )
    (Com {[LIT_CHARS cat]} {[LIT_CHARS -]}
      <
      (FilenameRedirectNode filename={[VarSub 4]} <REDIR_GREAT ">"> 1),
      >
    )
  )
  (Com {[VarSub 1]} {[VarSub 2]} {[VarSub 3]} {[VarSub 6]} {[LIT_CHARS file]} {[LIT_CHARS file]}
    <
    (FilenameRedirectNode filename={[VarSub 4]} <REDIR_LESS "<"> 0),
    (FilenameRedirectNode filename={[VarSub 5] [LIT_CHARS .stdout]} <REDIR_GREAT ">"> 1),
    (FilenameRedirectNode filename={[VarSub 5] [LIT_CHARS .stderr]} <REDIR_GREAT "2>"> 2),
    >
  )
  (Com {[VarSub 1]} {[VarSub 2]} {[VarSub 3]} {[VarSub 6]} {[LIT_CHARS file]} {[LIT_CHARS file]}
    <
    (FilenameRedirectNode filename={[VarSub 4]} <REDIR_LESS "<"> 0),
    (FilenameRedirectNode filename={[VarSub 5] [LIT_CHARS .stdout]} <REDIR_DGREAT ">>"> 1),
    (FilenameRedirectNode filename={[VarSub 5] [LIT_CHARS .stderr]} <REDIR_DGREAT "2>>"> 2),
    >
  )
  (Com {[VarSub 1]} {[VarSub 2]} {[VarSub 3]} {[VarSub 6]} {[LIT_CHARS terminal]} {[LIT_CHARS terminal]}
    <
    (FilenameRedirectNode filename={[VarSub 4]} <REDIR_LESS "<"> 0),
    (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT ">"> 1),
    (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT "2>"> 2),
    >
  )
  (Com {[VarSub 1]} {[VarSub 2]} {[VarSub 3]} {[VarSub 6]} {[LIT_CHARS terminal]} {[LIT_CHARS pipe]}
    <
    (FilenameRedirectNode filename={[VarSub 4]} <REDIR_LESS "<"> 0),
    (DescriptorRedirectNode target={[LIT_CHARS 1]} <REDIR_GREATAND "2>&"> 2),
    (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT ">"> 1),
    >
  )
  (Com {[VarSub 1]} {[VarSub 2]} {[VarSub 3]} {[VarSub 6]} {[LIT_CHARS terminal]} {[LIT_CHARS terminal]}
    <
    (FilenameRedirectNode filename={[VarSub 4]} <REDIR_LESS "<"> 0),
    (FilenameRedirectNode filename={[LIT_CHARS /dev/null]} <REDIR_GREAT ">"> 1),
    (DescriptorRedirectNode target={[LIT_CHARS 1]} <REDIR_GREATAND "2>&"> 2),
    >
  )
)