On the Stradella bass system, diminished 7th chords are also minor 6th chords
AKA: Bb diminished seventh, Bb°, Bbdim, Bbdim7, Bbdim7th, Bbdim/6, Bbdim(add6)
Green bass pattern: Bbdim7(omit5) = Bbm6(omit5)
Blue counter bass pattern: Bbdim7
Notes:
B♭, D♭, F♭, A♭♭
(B♭, D♭, E, G)
B♭dim button plays:
B♭, D♭, A♭♭ (no F♭)
Intervals:
R, m3°, dim5°, dim7°
Dim buttons play:
R, m3°, dim7° (no dim5°)
Left hand:
Green bass pattern:
Bbdim7(omit5), same as Bbm6(omit5)
B♭ + B♭dim
(A# + A#dim)
Blue counter bass pattern: Bbdim7
B♭ + F♭dim
(A# + Edim)
Fingering:
4 + 2
