1. D7 - Em7 - Fmaj.7 - Bbm7

2. Cm7 - Bmaj.7 - Dbmaj.7 - F7

3. Fø - Gbmaj.7 - Eø - Bø

4. Gmaj.7 - Dbø - Dø - Fm7

5. Dmaj.7 - Cmaj.7 - Aø - Ebm7

6. A7 - Dm7 - C7 - F#m7

Cmaj.7 = C E G B	Dm7 = D F A C	Em7 = E G B D	Fmaj.7 = F A C E
G7 = G B D F	Am7 = A C E G	Bø = B D F A

C.
Ebm7 is the only seventh chord which has black notes only : Eb Gb Bb Db.

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D.
The are 10 seventh chords with only one white note are :

Cø = C Eb Gb Bb	Eb7 = Eb G Bb Db	Ebø = Eb Gb A Db
Gbmaj.7 = Gb Bb Db F	Gb7 = Gb Bb Db E	Ab7 = Ab C Eb Gb
Abm7 = Ab B Eb Gb	Bbm7 = Bb Db F Ab	Bbø = Bb Db E Ab
Bmaj.7 = B D# F# A#

E.
The missing notes are :

1.	Bb	F#	Bb
2.	E	Gb	A
3.	D	Eb	D
4.	Gb and Bb	C and E	A and C
5.	E and B	D# and A#	Bb and F
6.	F and A	D and F	C# and E

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F.
The major 7th chords are :

Cmaj.7 = C E G B	Fmaj.7 = F A C E	Bbmaj.7 = Bb D F A
Ebmaj.7 = Eb G Bb D	Abmaj.7 = Ab C Eb G	Dbmaj.7 = Db F Ab C
Gbmaj.7 = Gb Bb Db F	Bmaj.7 = B D# F# A#	Emaj.7 = E G# B D#
Amaj.7 = A C# E G#	Dmaj.7 = D F# A C#	Gmaj.7 = G B D F#

G.
The dominant 7th chords are :

C7 = C E G Bb	F7 = F A C Eb	Bb7 = Bb D F Ab
Eb7 = Eb G Bb Db	Ab7 = Ab C Eb Gb	Db7 = Db F Ab B
Gb7 = Gb Bb Db E	B7 = B D# F# A	E7 = E G# B D
A7 = A C# E G	D7 = D F# A C	G7 = G B D F

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H.
The minor 7th chords are :

Cm7 = C Eb G Bb	Fm7 = F Ab C Eb	Bbm7 = Bb Db F Ab
Ebm7 = Eb Gb Bb Db	Abm7 = Ab B Eb Gb	Dbm7 = Db E Ab B
Gbm7 = Gb A Db E	Bm7 = B D F# A	Em7 = E G B D
Am7 = A C E G	Dm7 = D F A C	Gm7 = G Bb D F