Triads and their inversions, voice leading fundamentals.
48 chords in this genre
C
Cm
Cdim
Caug
Db
Dbm
Dbdim
Dbaug
D
Dm
Ddim
Daug
Eb
Ebm
Ebdim
Ebaug
E
The Beatles Final Chord — 'A Day in the Life' (1967)
Em
Edim
Eaug
F
Fm
Fdim
Faug
F#
F#m
F#dim
F#aug
G
Gm
Gdim
Gaug
Ab
Abm
Abdim
Abaug
A
Am
Adim
Aaug
Bb
Bbm
Bbdim
Bbaug
B
Bm
Bdim
Baug