\version "2.18.2"

\new Staff {
  \relative c'
  <<
    \new Voice {
      \voiceOne
      <f a>2. f4
      <f a>2. f4
      <f a>2. f4
      <f a>2~ q4 f4
      <f a>2~ q4 f4
      <f a>2~ q4 f4
    }
    \new Voice {
      \voiceTwo
      s32 <d f>2.*23/24 f4
      \override NoteColumn.force-hshift = #0.9
      <d f>2. \override NoteColumn.force-hshift = #0 f4
      <d f>2. f4
      \override NoteColumn.force-hshift = #0.9 <d f>2~ q4 \override NoteColumn.force-hshift = #0 f4
      \override NoteColumn.force-hshift = #0.9 <d f>2~ \override NoteColumn.force-hshift = #0 q4 f4
      <d f>2~ q4 f4
    }
  >>
}