Major Seventh	CM7 [C-E-G-B]
Dominant Seventh	C7 [C-E-G-B♭]
minor Seventh	Cm7 [C-E♭-G-B♭]
half-diminished Seventh	CØ7 or C7♭5 [C-E♭-G♭-B♭]
fully-diminished Seventh	CO7 [C-E♭-G♭-B♭♭(A)]
diminished Major Seventh	COM7 [C-E♭-G♭-B]
minor-Major Seventh	CmM7 [C-E♭-G-B]
Augmented Seventh or Dominant 7♯5	C+7 or C7♯5 [C-E-G♯-B♭]
Augmented-Major Seventh	C+M7 or CM7♯5 [C-E-G♯-B]