Clarinet fingerings

[Greg]

I am new to Lilypond and am slowly trying to learn to use it. I have
rediscovered learning the clarinet and my teacher has asked me to start with
the G major and F major scales. I'm pretty much a novice with little
knowledge (thus far) of the deeper aspects and subtleties of musical
notation, but I'm working on it. I thought learning Lilypond would a) help
me create whatever scales I need - initially with the fingerings, to set me
on the right path and b) immerse me in the details, so I'd learn faster. I
have managed to construct what I think is the F major scale (see below) but
you'll also see that the clarinet fingerings are not showing up.  E is doing
something but its diagram is different for a reason I don't understand and
none of the other fingerings are showing on the vanilla clarinet key
diagrams? Can anyone pont to what's going on, please?

Many thanks

Greg

(Frescobaldi: 2.19.0
Python: 3.4.6
python-ly: 0.9.4
Qt: 4.8.6
PyQt: 4.11.4
sip: 4.16.9
poppler: 0.43.0
python-poppler-qt: 0.24.0
OS: Linux-4.4.92-18.36-default-x86_64-with-SuSE-42.2-x86_64)

My .ly code follows:
----------------------------------------

\language "english"

#(print-keys-verbose 'clarinet (current-error-port)) 
  \time 4/4
  \relative f {
  \key f \major
  \textLengthOn
    f4^\markup
      \override #'(size . 0.5){
      \woodwind-diagram
        #'clarinet
        #'((cc . (one two three four five six))
           (lh . (thumb))
           (rh . (four))
      }
    g4^\markup
      \override #'(size . 0.5){
      \woodwind-diagram
        #'clarinet
        #'((cc . (one two three four five six))
           (lh . (thumb)))
      }
    a4^\markup
      \override #'(size . 0.5){
      \woodwind-diagram
        #'clarinet
        #'((cc . (one two three four five))
           (lh . (thumb)))
      }
    b4^\markup
      \override #'(size . 0.5){
      \woodwind-diagram
        #'clarinet
        #'((cc . (one two three four))
           (lh . (thumb)))
      }
    c4^\markup
      \override #'(size . 0.5){
      \woodwind-diagram
        #'clarinet
        #'((cc . (one two three))
           (lh . (thumb)))
      }
    d^\markup
      \override #'(size . 0.5){
      \woodwind-diagram
        #'clarinet 
        #'((cc . (one two))
           (lh . (thumb)))
      }
    e4^\markup
      \override #'(size . 0.5){
      \woodwind-diagram
        #'clarinet
        #'((cc . (one))
           (lh . (thumb)))
      }
    f4^\markup
      \override #'(size . 0.5){
      \woodwind-diagram
        #'clarinet
        #'((cc . (one)))
      }
    g4^\markup
      \override #'(size . 0.5){
      \woodwind-diagram
        #'clarinet
        #'()
      }
    a4^\markup
      \override #'(size . 0.5){
      \woodwind-diagram
        #'clarinet
        #'()
      }
    b4^\markup
      \override #'(size . 0.5){
      \woodwind-diagram
        #'clarinet
        #'()
      }
    c4^\markup
      \override #'(size . 0.5){
      \woodwind-diagram
        #'clarinet
        #'()
      }
    d4^\markup
      \override #'(size . 0.5){
      \woodwind-diagram
        #'clarinet
        #'()
      }
    e4^\markup
      \override #'(size . 0.5){
      \woodwind-diagram
        #'clarinet
        #'()
      }
    f4^\markup
      \override #'(size . 0.5){
      \woodwind-diagram
        #'clarinet
        #'()
      }
    g4^\markup
      \override #'(size . 0.5){
      \woodwind-diagram
        #'clarinet
        #'()
      }
    a4^\markup
      \override #'(size . 0.5){
      \woodwind-diagram
        #'clarinet
        #'()
      }
    b4^\markup
      \override #'(size . 0.5){
      \woodwind-diagram
        #'clarinet
        #'()
      }
    c4^\markup
      \override #'(size . 0.5){
      \woodwind-diagram
        #'clarinet
        #'()
      }
  }



--
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