C#2-D#2. Seltmann, Werner and Angerhöfer, Günter. Fagott-Schule in sechs Bänder, vol. 6 (Mainz: Schott), p.138. Permission granted for inclusion in this WWW index by Deutcher Verlag für Musik.

C#2:                  D#2:
    Db                       Eb
x x x | x x x F       x x eb x | x x x F
          E                        E      
  C D                        D

Contrabassoon (German system) trills and shakes by note names