Lyrics and clefs

[Iain Phillips]

I would like to use the treble clef down an octave (G_8) for the tenor
voice in transcribing a choral piece.  I notice that the lyrics are
placed lower than when a simple treble clef is used, as if they are
trying to avoid clashing with the 8 below the clef.  Is there a way I
can get the lyrics higher?

I append an example file.

Thanks
Iain Phillips
---------------------
\version "1.4.3"
% Example shows that Lilypond takes the size of the clef into account
% when positioning lyrics.

\score {
  <
  \addlyrics
  \context Staff = SopStaff {
    \clef violin
    \notes \relative c' {c d e f}
  }
  \context Lyrics = SopLyrics {
    \lyrics {
      do re mi fa
    }
  }
  \addlyrics
  \context Staff = TenStaff {
    \clef "G_8"
    \notes \relative c {c d e f}
  }
  \context Lyrics = TenLyrics {
    \lyrics {
      do re mi fa
    }
  }
  >
}