On the Stradella bass system, diminished 7th chords are also minor 6th chords
AKA: G diminished seventh, G°, Gdim, Gdim7, Gdim7th, Gdim/6, Gdim(add6)
Green bass pattern: Gdim7(omit5) = Gm6(omit5)
Blue counter bass pattern: Gdim7
Notes:
G, B♭, D♭, F♭
Gdim button plays:
G, B♭, F♭ (no D♭)
Intervals:
R, m3°, m5°, dim7°
Dim buttons play:
R, m3°, dim7° (no 5°)
Left hand:
Green bass pattern:
Gdim7(omit5), same as Gm6(omit5)
G + Gdim
Blue counter bass pattern: Gdim7
G + D♭dim (Fx + C#dim)
Fingering:
4 + 2