Major Seventh	D♭M7 [D♭-F-A♭-C]
Dominant Seventh	D♭7 [D♭-F-A♭-C♭(B)]
minor Seventh	D♭m7 [D♭-F♭-A♭-C♭(B)]
half-diminished Seventh	D♭Ø7 or D♭7♭5 [D♭-F♭-A♭♭(G)-C♭(B)]
fully-diminished Seventh	D♭O7 [D♭-F♭-A♭♭(G)-C♭♭(B♭)]
diminished Major Seventh	D♭OM7 [D♭-F♭(E)-A♭♭(G)-C]
minor-Major Seventh	D♭mM7 [D♭-F♭-A♭-C]
Augmented Seventh or Dominant 7♯5	D♭+7 or D♭7♯5 [D♭-F-A-C♭(B)]
Augmented-Major Seventh	D♭+M7 or D♭M7♯5 [D♭-F-A-C]