Hexatonic Scales
F♯m over Cm (minor triad over minor triad a tritone apart).
C        E♭          G     A           C♯             F♯
1        ♭3          5     6           ♭9             ♯11

Parent scales are B♭ diminished (no 1 or ♭5) or C♯ diminished (no ♭3 or 6) or E diminished (no 1 or ♭5) or G diminished (no ♭3 or 6).
C  C♯    E♭       F♯ G     A
1  ♭2    ♭3       ♯4 5     6

Related chords (reverse diminished).
| A13♭9 (no ♭9  or 5) | C13♭9 (no 3 or ♭7) | E♭13♯9 (no ♭9 or 5) | F♯13♭9 (no 3 or ♭7) |
Am shape
A G F♯ E♭ C♯ C A G F♯ E♭ C♯ C A G F♯
Gm shape
C A G F♯ E♭ C♯ C A G F♯ E♭ C♯ C A
Em shape
E♭ C♯ C A G F♯ E♭ C♯ C A G F♯ E♭ C♯ C
Dm shape
E♭ C♯ C A G F♯ E♭ C♯ C A G F♯ E♭ C♯
Cm shape
G F♯ E♭ C♯ C A G F♯ E♭ C♯ C A G F♯
Am shape 2
A G F♯ E♭ C♯ C A G F♯ E♭ C♯ C A G
Gm shape 2
C A G F♯ E♭ C♯ C A G F♯ E♭ C♯ C
Em shape 2
C♯ C A G F♯ E♭ C♯ C A G F♯ E♭ C♯ C
Dm shape
F♯ E♭ C♯ C A G F♯ E♭ C♯ C A G F♯ E♭
Cm shape
A G F♯ E♭ C♯ C A G F♯ E♭ C♯ C A G F♯
2 nps
F♯ E♭ C♯ C A G F♯ E♭ C♯ C A G
2 nps
G F♯ E♭ C♯ C A G F♯ E♭ C♯ C A
2 nps
A G F♯ E♭ C♯ C A G F♯ E♭ C♯ C
2 nps
C A G F♯ E♭ C♯ C A G F♯ E♭ C♯
2 nps
C♯ C A G F♯ E♭ C♯ C A G F♯ E♭
2 nps
E♭ C♯ C A G F♯ E♭ C♯ C A G F♯
3 nps
E♭ C♯ C A G F♯ E♭ C♯ C A G F♯ E♭ C♯ C A G F♯
3 nps
A G F♯ E♭ C♯ C A G F♯ E♭ C♯ C A G F♯ E♭ C♯ C