multiple strophes centered

[Bernhard Kleine]

In the documentation is the following code. This does not center
vertically the repeated text and the three strophes. Do you know to
achieve a text where the second stanza would be aligned with the
repeated text (could maybe added to the documentation)?

Regards
Bernhard

\score {
  <<
    \new Staff {
      \new Voice = "melody" {
        \relative c'' {
          a4 a a a
          \repeat volta 3 { b4 b b b }
          c4 c c c
        }
      }
    }
    \new Lyrics = "firstVerse" \lyricsto "melody" {
      Not re -- peat -- ed.
      <<
        { The first time words. }
        \new Lyrics = "secondVerse"
        \with { alignBelowContext = #"firstVerse" } {
          \set associatedVoice = "melody"
          Sec -- ond time words.
        }
        \new Lyrics = "thirdVerse"
        \with { alignBelowContext = #"secondVerse" } {
          \set associatedVoice = "melody"
          The third time words.
        }
      >>
      The end sec -- tion.
    }
    \new Voice = "harmony" {
      \relative c' {
        f4 f f f \repeat volta 2 { g8 g g4 g2 } a4 a8. a16 a2
      }
    }
  >>
}