\version "2.6.3"

barNotesI = \relative c' { \context Voice = "bar" { c d e f } }
barNotesII = \relative c' { c d e f }
barWordsI = \lyrics { iiiiiiii jjj kkk lll }
barWordsII = \lyrics { iii jjj kkkkkkkk lll }

\score {
  <<
%    \new Voice { \barNotesI }
    \context Voice = "bar" { \barNotesII }
    \new Lyrics \lyricsto "bar" \lyricmode { eeeeeeee  fff ggg hhh }
    \new Lyrics \lyricsto "bar" \lyricmode { eee  fff gggggggg hhh }
    \new Lyrics \lyricsto "bar" \lyricmode { \barWordsI }
    \new Lyrics \lyricsto "bar" \lyricmode { \barWordsII }
  >>

  \layout {}
}