On the Stradella bass system, diminished 7th chords are also minor 6th chords
AKA: D diminished seventh, D°, Ddim, Ddim7, Ddim7th, Ddim/6, Ddim(add6)
Green bass pattern: Ddim7(omit5) = Dm6(omit5)
Blue counter bass pattern: Ddim7
Notes:
D, F, A♭, C♭
Ddim button plays:
D, F, C♭ (no A♭)
Intervals:
R, m3°, m5°, dim7°
Dim buttons play:
R, m3°, dim7° (no 5°)
Left hand:
Green bass pattern:
Ddim7(omit5), same as Dm6(omit5)
D + Ddim
Blue counter bass pattern: Ddim7
D + A♭dim
(Cx + G#dim)
Fingering:
4 + 2