odd text position?

[Gerard McConnell]

Hello,

As you can see from the following code snippet, the

three words don't seem to go on the same baseline under the notes.  Could you please tell me what I've done wrong?

Thanks for any help,

Gerard

 

\version "2.12.2"

\layout {
    ragged-right = ##f
}

\score {
 {
  \set Staff.instrumentName = "1"
  \clef bass
  \time 2/4
  \relative c {
   c8 -\tweak #'font-size #-3 _one
   c -\tweak #'font-size #-3 _and
   c4 -\tweak #'font-size #-3 _two
   d8  d  d4  e8 e e4   c2 \bar "|."
  }
 }
}