\version "2.21.0"

#(define-public (flat-flag grob)
  "Flat flag style.  The angles of the flags are both 0 degrees"
  ((straight-flag 0.48 0.81 0 1.0 0 1.0) grob))


\layout {
  \context {
    \Score
      \override Flag.stencil = #flat-flag
  }
}


\relative c' {

  \autoBeamOff
  { f'8 f16 f32 f }
  \autoBeamOn
  { d8 d16 d32 d }
  
    
}