I did, but in the lyrics, the syllable "Heek" started shifting to
note when it should have come under the note I just made. How can I deal
with this problem?
\new RhythmicStaff {
{ \numericTimeSignature
\time 12/8
\set Timing.beatStructure = #'(2 1 1 2 2 2 1 1)
4 8 \override Stem.direction = #DOWN 8 \override Stem.direction = #UP 4
\override Stem.direction = #DOWN 4 \override Stem.direction = #UP
<< 4 \\ 4 >> \override Stem.direction = #UP 8 \override
Stem.direction = #DOWN 8 \bar "|."
}
\addlyrics {Düüm Te Ke Düüm Tâ Heek Te Ke}
}