Hexatonic Scales

D over C (major triad over major triad a whole step apart).
C           E        G     A              D           F♯
1           3        5     6              9           ♯11

Parent scales are G major (no 3) or G melodic minor (no ♭3).
G     A        C     D     E     F♯  
1     2        4     5     6     7 

Related chords
| Gmaj7 GmMaj7 | Am7 | B♭maj7♯5 | Cmaj7♯11 C7#11 | D9 D9sus | Em9♭5 | F♯m7♭5 F♯7♯5♯9 |

A shape

A G F♯ E D C A G F♯ E D C A G F♯

G shape

C A G F♯ E D C A G F♯ E D C A

E shape

D C A G F♯ E D C A G F♯ E D C

D shape

E D C A G F♯ E D C A G F♯ E D

C shape

G F♯ E D C A G F♯ E D C A G F♯ E

2 nps

F♯ E D C A G F♯ E D C A G F♯ E D C A G F♯ E D C A G

2 nps

G F♯ E D C A G F♯ E D C A

2 nps

A G F♯ E D C A G F♯ E D C

2 nps

C A G F♯ E D C A G F♯ E D

2 nps

D C A G F♯ E D C A G F♯ E

2 nps

E D C A G F♯ E D C A G F♯

3 nps

E D C A G F♯ E D C A G F♯ E D C A G F♯

3 nps

A G F♯ E D C A G F♯ E D C A G F♯ E D C